Digitization and Coding of Canals in Armenia by zgo16115


									                      Trans-Boundary River Management Phase II for the Kura River –
                                   Armenia, Georgia and Azerbaijan

                                      Service Contract No TACIS/2007/134-398

                 Digitization and Coding of Canals in Armenia

                                                Technical Report

                                               Prepared by:
               EPTISA Servicios de Ingenieria S.A. (Spain) & Grontmij Carl Bro A.S. (Denmark)

                                                    October 2009

                                    A project funded by the European Union

   Disclaimer: This report has been prepared with the financial assistance of the European Commission.
The views expressed herein are those of the consultants and in no way reflect the official opinion of the Commission
                                                   TABLE OF CONTENTS

LIST OF ACRONYMS ......................................................................................................................... 3
INTRODUCTION.................................................................................................................................. 4
  1 BACKGROUND ........................................................................................................................... 5
  2 OBJECTIVES ............................................................................................................................... 7
  3 CODING METHODOLOGY ...................................................................................................... 8
  4 IMPLEMENTATION................................................................................................................. 10
  5 FINAL OUTCOME OF THE ACTIVITY ............................................................................... 15
CONCLUSION .................................................................................................................................... 16
ANNEX 1: SCOPE OF WORK .......................................................................................................... 17
ANNEX 3. WATER OBJECT CODES FOR ALL 170 CANALS IN ARMENIA........................ 19
ANNEX 4. REFERENCES ................................................................................................................. 23


ASH         Armenian State Hydro-meteorological Service
CJSC        Closed Joint-Stock Company
DEM         Digital Elevation Model
DW          Data Warehouse
EEA         European Environment Agency
EIMC        Environmental Impact Monitoring Center
ERICA       European River and Catchment Area Coding System
EU          European Union
FSU         Former Soviet Union
GIS         Geographic Information System
GPS         Global Positioning System
HTS         Hydro-Technical Structure
MNP         Ministry of Nature Protection
MTA         Ministry of Territorial Administration
NGO         Non-Governmental Organization
SCWS        State Committee on Water Systems
SWC         State Water Cadastre
SWCIS       State Water Cadastre Information System
WFD         Water Framework Directive
WGS         World Geographic System
WOC         Water Objects Coding
WRMA        Water Resources Management Agency
WUA         Water User Associations
USAID       Unites States Agency for International Development


Water resources represent one of the most important components of nation’s welfare and
development, hence their efficient use and management is of priority importance. To achieve this,
information on water resources need to be accurate, accessible, timely, and easily interpretable. In
Armenia data and information on water recourses is maintained within various state and private
agencies’ in both hard copy and digital format. Summary information on water resources is being
accumulated in the State Water Cadastre Information System (SWCIS) maintained by Water
Resources Management Agency (WRMA) of the Ministry of Nature Protection (MNP) of Armenia.

Water objects coding is an internationally widespread technique, which assigns unique identifiers to
rivers, lakes, reservoirs, canals and catchment areas in order to facilitate linking data from various
databases based on spatial characteristics of the feature. Armenia had no water object coding system
until the development of a new methodology, which has been created in 2006 by the financial
assistance of USAID Water Management Program. Adopting internationally accepted water objects
coding system was a key priority for Armenia. The proposed approach maintained some aspects of the
former Soviet coding system but is based on the European River and Catchment Area Coding System
(ERICA), which provides an opportunity for future integration into the joint European Union system.

During 2006-2008 coding of Armenian river network, their catchment areas, as well as lakes and
reservoirs has been implemented. In order to finalize the coding of all water objects in Armenia, in
2009 the European Union Project “Transboundary River Management Phase II for the Kura River
Basin Armenia, Georgia, Azerbaijan” initiated an activity on digitization and coding of canals in
Armenia. The assignment proved to be a logical continuation of the activities on water objects coding.
Digitization and coding of canals envisaged to complete the task of integrating all surface water
bodies of Armenia in a single GIS geodatabase. Completion of the entire database on coding of
Armenian water objects (river network, catchment areas, lakes, reservoirs and canals) will promote
more precise characterization of water resources and identification of water bodies required by WFD.

The activity has been implemented as a joint effort of the Armenian Institute on Geodesy and
Cartography CJSC and GEORISK Scientific Research Company Ltd. under the overall coordination
of Environmental Policy Analysis NGO. According to the Scope of Work for this assignment (Annex
1 of this report) the overall task was divided into the following three main stages:
(1) digitization of Armenian canals and adjustment of water objects coding methodology for canals;
(2) designating unique identifiers (codes) to the digitized canals according to the methodology; and
(3) incorporation of the coded canals into the general Water Objects Coding geodatabase of Armenia.

The background and objectives of the activity are presented in Sections 1 and 2 of this report. The
adjusted methodology for coding of canals in Armenia is discussed in Section 3. During the actual
implementation of the assignment a number of issues arose which required technical solutions. Those
issues are discussed in Section 4 of this report along with description of the proposed solutions. The
last section summarized the final output of the activity. In addition to the Scope of Work, the Annexes
of the report also include the structure of the finalized water resources geodatabase in GIS format as
of September 10, 2009 (Annex 2); a table with actual water object codes for all 170 digitized canals in
Armenia (Annex 3) and list of literature sources used while adjusting the methodology (Annex 4).


In Armenia data and information on water recourses maintained within the various agencies databases
are integrated into the State Water Cadastre Information System. Along with tabular data, the SWCIS
incorporates also spatial layers related to water resources, such as: natural streams (rivers), lakes and
reservoirs, catchment areas, water quantity and quality monitoring stations, etc. To be operational,
such system needed to allow entering additional data to its components. To link the additional data
with existing datasets as well as to ensure inter-operability among the databases, a unique identifier
needed to be assigned to each water object in the country. These codes will provide a “unified”
system of identifiers between agencies and water resources planners and serve for presenting the
spatial relationships between these features and other datasets such as water quantity and quality
monitoring posts, land-use patterns, vegetation and landscape zones, topography, etc.

The SWCIS consists of a Data Warehouse, data imputing templates, databases at each stakeholder
institution, and electronic tools for data transfer between these institutions. It includes both
administrative/legal and technical water resources data and serve as an official legal repository of
water resources and water systems information for the Government of Armenia. The Data Warehouse
(DW) incorporates water resources related data from multiple sources and stores it under a unified,
integrated relational database at a single site. The DW provides users a single consolidated interface
and portal to summarize information to support water management and conservation decision-making
at the central and basin levels. The SWCIS has been constructed according to the technical design
developed and agreed upon by all stakeholder organizations in 2006. The system architecture of the
SWCIS is shown in Figure 1 below.

Figure 1. Technical structure of the SWC Information System

The main concepts of the SWCIS are summarized below:

•   The SWCIS contains both spatial and tabular data, and uses relational database model and client-
    server architecture.

•   The Data Warehouse uses a common water objects coding system (ERICA) to link the data of
    stakeholder organizations and geo-referencing water objects within the information system.
•   The SWCIS facilitates data/information sharing between stakeholder organizations on a regular
•   The stakeholder organizations agree upon the datasets to share among them and the scope of
    summary information to be provided to the Data Warehouse.
•   The Water Resources Management Agency of the Ministry of Nature Protection of Armenia
    shares the Data Warehouse data holding on-line via the WRMA website (URL: www.wrma.am)

The works on the coding of water objects in Armenia were launched in May 2006. As a first step a
number of coding techniques, both common for European countries and ones applied worldwide, were
investigated. As a result of the research, ERICA coding system was selected, adjusted for Armenia
and agreed with all stakeholders.

During 2006-2008, with the support of USAID, the following activities were implemented:

•   ERICA coding methodology was enhanced to assign identifiers to rivers, catchment areas, lakes
    and reservoirs of Armenia, taking into account the system of water objects coding of the FSU;
•   The entire river network of Armenia was digitized from 1:25,000 scale hardcopy maps;
•   The rivers, tributaries and streams longer 5km in length were coded based on ERICA
    methodology. Total 1998 river sections got unique identifiers;
•   Accordingly, 1998 catchment areas and inter-basin areas of river sections were coded and got
    unique identifiers based on ERICA methodology;
•   All lakes and reservoir of Armenia were digitized from 1:25,000 scale hardcopy maps;
•   Total 561 lakes and 314 reservoirs were coded and got unique identifiers based on ERICA

To finalize the WOC database of Armenia following tasks should have been completed:

•   adjusting Armenian methodology of Water Objects Coding for canals;

•   digitizing the network of main, distributive and tertiary canals of Armenia (scale: 1:25,000);

•   establishing a digital database in ArcGIS format on all canals currently in operation in Armenia;

•   coding the digitized canals according to the proposed methodology;

•   incorporating the newly created layers into the Armenian Water Objects Coding geodatabase.


The main objective of the digitization and coding of canals in Armenia is to provide a computer-based
tool for incorporating of data on canals from various sources into a comprehensive database. The
digitization provides for accurate locating of the main, distributive and tertiary canals on the GIS base
map of Armenia. The coding facilitates incorporation of all available information on the given canal
(including technical characteristics, water quantity and quality data, etc) into a comprehensive
database under the unique identifier (code) of the given canal. This code plays a role of “social
security number” and enables linking four related databases of SWCIS based on spatial location of the
given canal. Those databases include:

•   Hydrological (water quantity) monitoring database run by ASH of the MNP;
•   Water quality monitoring database, operated by EIMC of the MNP;
•   Water use permitting database, operated by WRMA of the MNP; and
•   Database on hydro-technical structures (HTSs) run by SCWS of the MTA and WUAs.
The above-mentioned organizations appear to be the main stakeholders/’users of the system. The
Table below presents a brief summary on the needs of those entities to be addressed by the further use
of the canals’ coding system, as well as their rights to revise and update the WOC database.

#      User           Needs to be addressed                                     User rights
          The coding of canals will:                            • Reading, revising, updating Water Use
          • ensure more informed decision-making                  Permitting Database
             for water use permitting                           • Running Data Warehouse with full
          • facilitate characterization of river basins           access to information and rights to
1    WRMA
          • facilitate delineation of artificial water            revise the WOC database, including
             bodies (AWB) under WFD requirement                   adding new canals, assigning identifiers
          • facilitate development of Plan of                     (codes), removing non-operational
             Measures for AWBs                                    canals out of database.
          The digitization of canals will facilitate            • Reading, revising, updating
          more accurate calculation of flows in the               Hydrological Database;
          rivers that the canals originate from.                • Sending summary data on water level
2    ASH  In addition, since the catchment area is                and flow rate in the canals to the Data
          identified which the canal originates from,             Warehouse of WRMA
          the calculation of runoff in the case of open         • If necessary, requesting WRMA on
          canals is possible.                                     revision of the WOC database
          The digitization and coding of canals will            • Reading, revising, updating Water
          facilitate proper classification of AWBs in             quality monitoring database;
          terms of water quality parameters. This will          • Sending summary data on quality in the
3    EIMC serve for further preparation of information-           canals to the Data Warehouse of
          based proposals on expansion of water                   WRMA
          quality monitoring network in Armenia to              • If necessary, requesting WRMA on
          include AWBs                                            revision of the WOC database
          Available information on hydro-technical              • Reading, revising, updating Database on
          structures will be spitted to identify datasets         HTSs;
4    SCWS
          for separate canals. This will facilitate             • Sending summary data on technical
          proper management of canals in operation.               characteristics of the canals to the Data
          The technical characteristics of each canal             Warehouse
          (so called “technical passport”) will be              • If necessary, requesting WRMA on
5    WUA
          digitized and incorporated into the database            revision of the WOC database
          under the given identifier.


Water objects coding system of Armenia incorporates some features of the FSU coding system and
the main concepts of the European River and Catchment Area Coding system. The ERICA system has
been developed by the UK's Institute of Hydrology, Denmark's National Environmental Research
Institute and the University of Freiburg, which initiated the process in 1997. At initial stages ERICA
provided a pilot study databases for two areas - the Mingo in Spain and Portugal, and the Meuse in
France and Belgium. Special advisory services were provided for ensuring ERICA coding system to
create databases which meet the needs of European Environment Agency (EEA). Currently, over 20
countries of Europe use this system, which provides an opportunity to establish comprehensive coding
system for transboundary rivers and water objects, by considering hydrological borders of their
catchment areas and disregarding political borders among the countries.

Compared to the other systems, the ERICA coding system has the following advantages:

•   It works for up to 99 sub-catchments and 49 tributary catchments, thus making it easier to
    maintain a relationship between catchment size and levels of coding.
•   Seas and Marine borders are handled.
•   Areas draining in a diffused manner to marine borders are treated in a manner consistent with
    river coding.
•   It enables easy assessment of relationships between sub-catchment and river reaches based on
    simple numeric comparisons and detection of even or odd numbers.

Figure below represents schematically the Armenian Water Objects Coding System methodology.

Figure 2. Scheme of Armenian water objects coding methodology

As one can see from the figure, preserving the 2nd and 3rd digits of the FSU system enables to
commence the coding of Armenian rivers by certain code-prefix. In future, while integrating into
European and other international systems these “92” and “94” prefixes could just be replaced by
international codes of Araks and Kura rivers, whereby the remaining part of the code of any water
object will avoid changes. Coding ranging from 4th digit is conducted by ERICA system where it
creates capacity for making up to 99 divisions within river system (as Armenia has complicated
altitudes and even waters in small rivers have economic significance). Here maximum 49 tributaries
are defined which are numbered by even numbers (02, 04 ... 98), and inter-basin territories receive
odd numbers (01, 03 … 99). It is obvious from the figure above that the length of the water object
code depends upon the level of tributary of the main river because it increases by two digits at each
successive level. The longest river code in Armenia consists of 15 digits, which is entirely acceptable
in current technical conditions.

The Armenian methodology on Water Objects Coding [1] used for coding of rivers, catchment areas,
lakes and reservoirs. However, in case of canals, it had not specified any specific rules – it used to
discuss possible options for individual cases. The purpose of the first task under the activity was to
choose the optimal option, as well as to supplement the proposed Methodology for the cases it had not

To achieve this objective, diverse coding techniques were studied – both common European and the
ones applied by individual countries [2]. A description of coding principles for canals was found only
in one literature source [3]. The main concepts of this proposal were also used while coding Armenian
lakes and reservoirs.

Canals do not relate to one primary catchment only. Therefore a logical choice was to be made which
catchment these objects might inherit their code from. While for lakes the code of the river segment
draining the lake was taken, for canals the opposite approach was taken: here the primary catchments
from where the canal starts seems more appropriate to consider.

One of the issues arising with coding of canals is a situation, when more than one drainage canal
might occur in the same primary catchment. In order to allow for a unique identification of these
objects an additional letter or digit is needed. In European coding system for hydrological features a
letter code was used. Taking into account the fact that ERICA uses the letter index in the end of the
code to indicate basin size, the numerical indication of the canal was chosen to avoid confusion. Thus,
a two-digit number is used instead of a letter.

Another issue faced during the coding of canals is “branching”. There are some canals which have
distributive arms or legs. In such cases the distributive leg gets the same numerical identifier as the
“source” canal plus an additional two-digit number at the right, which corresponds to the consecutive
number of the legs from the same canal.

Therefore, the water body identifier has the following final form:
                                      ABC N1 N2 N3 ... Nm DD EE
A is one-digit code indicating the type of the water object (0 indicates a catchment area, 1 is for a
river, 2 -for a lake, 3 - for a reservoir, and 4 - for a canal);
B is one-digit regional code (9 for Armenia);
C is one-digit river basin code (2 - Araks river basin, 4 - Kura river basin);
N1 to Nm - are two-digit nested catchment codes;
DD is a two-digit number of canal;
EE is a two-digit number of a distributive canal

Next section will discuss the mentioned cases in more details


During three months the following tasks were implemented to accomplish the assignment:

•   1:25,000 topographic hard-copy map sheets were scanned and canals from the scanned sheets
    were digitized into ArcGIS environment;

•   Location of the canals were adjusted based on GPS-ing during field trips;
•   Location of the rest of canals were verified using available DEM and satellite images;

•   Present operational status of irrigation canals were clarified based on the information received
    from Water User Associations (WUA) throughout the country;

•   A GIS layer on canals of Armenia was finalized. As a result of digitization, 170 main, distributive
    and tertiary canals were identified in the country.

•   GIS layer was populated with available data on digitized canals, such as name of the canal, type,
    length and other technical characteristics.

•   Developed methodology for the canals coding was applied to assign unique identifiers to all
    digitized canals.

•   The water objects coding geodatabase of Armenia was amended with appropriate shape files and
    was finalized.

Based on the above-mentioned approach, the coding of canals is straightforward, when canal starts
from the river. In this case, the N1 to Nm digits of its code coincide to the corresponding digits of the
river section the canal originates from (refer to Figure 3 below).

                                                                                    Figure 3. The first
                                                                                    canal originated
                                                                                    from the river
                                                                                    1923605 with the
                                                                                    catchment area
                                                                                    0923605 got the

Even if the canal passes through several catchment areas it obtained the identifier of the mother-river.
For the cases when the canal originates from a lake or reservoir, the coding principles remain the
same and the N1 to Nm digits of identifiers coincide with those of the lake/reservoir. Figure 4 below
demonstrates the approach used.

                                                                      Figure 4. Example of coding
                                                                             of a canal originated
                                                                             from a reservoir

If some canals are originated from the smaller rivers (shorter than 5 km) or lakes, within the given
catchment area, they are coded using the numerical identifier of that catchment area according to the
consecutive appearance in the direction of the river flow. For an example please refer to Figure 5
below: the canals originated within the catchment area # 0 92 38 03 are coded from left to right, as the
river flow on that direction. So, the first canal with the identifier 4 92 38 03 01 originates from the
river (blue-green color on the picture); the second canal with the identifier 4 92 38 03 02 originates
from a smaller (non-coded) river within the basin (violet color); the third and fourth canals with
identifiers 4 92 38 03 03 and 4 92 38 03 04 respectively originate from a small lake entirely located
within the catchment area (light and dark green colors on the picture); and so on.

Figure 5. Example of coding of canals within the same catchment area

                                                 If the canal originates from the same point of the
                                                 river and flows to opposite directions, a left-hand
                                                 side canal (from river flow direction) gets identifier
                                                 first than the right-hand side canal. For example, on
                                                 Figure 6, a river flows from east to west within the
                                                 catchment area # 0 92 02 06 28 02 02. So the brown-
                                                 colored canal gets the identifier first (# 4 92 02 06 28
                                                 02 02 01), after which blue-colored canal one gets
                                                 the next identifier # 4 92 02 06 28 02 02 02.

                                                 Figure 6. Example of coding of two canals
                                                 originating from the same point of the river

In the case of “branched” canals, when the main canal has arms or legs (so-called distributive canals),
the latter are coded as “tributaries” of the main canal, using the same methodological approach, as it
was use while coding of river tributaries. As shown on Figure 7, the green-colored distributive arms
of the canal # 4 92 01 got the identifiers # 4 92 01 01 and 4 92 01 02, while the reddish distributive
arms are considered next consecutive “tributaries” and got identifiers # 4 92 01 03 and 4 92 01 04.

Figure 7. Example of coding of “branched” canals

The Ararat valley of Armenia is well-known with its dense drainage system for irrigation. Therefore,
in addition to digitization of canals, the mapping of main collectors, drainage system pipelines were
implemented as well (Figure 8). The exact location of irrigation canals was adjusted both by satellite
images and GPS-ed data provided by corresponding WUA. Figure 9 shows such an example in Debed
river basin.

     Figure 8.
     canals and
     system of
     Ararat valley

       Main canals



     Figure 9.
     canals from
     river, below
     (Debed river


Upon completion of the activity, the water objects coding geodatabase of Armenia was amended with
appropriate shape files. Several CDs were fired with a comprehensive geodatabase, covering the
following 5 datasets:
•   Catchment areas (total 1998 basins and inter-basins)
•   Lakes (total 561 natural lakes)
•   Reservoirs (total 314 man-made reservoirs)
•   River Network (total 1998 river sections)
•   Canals (total 170 main, distributive, tertiary canals)
In addition, five shape layers were added into the Water
Objects Coding geodatabase, namely:
•   State Boundary - Polyline shape file
•   Marzes of Armenia - Polygon shape file
•   Roads - Polyline shape file
•   Settlements - Polygon shape file
•   Main cities and town - Polyline shape file
All the spatial data are all displayed in UTM projection,
WGS-84, Zone-38 (see Figure 10). An ArcGIS project
was created and fired on CDs. The project covers the
overall territory of Armenia and, in addition to the
above-mentioned layers, includes:
•   State Boundary - Polyline shape file
•   Armenia Hillshade - raster file (GEOTIFF format)         Figure 10. Contents of the Armenian
                                                             Water Objects Coding geodatabase
•   Armenia DEM - raster file (GEOTIFF format)
•   Armenia Landsat-TM - 2 raster files (GEOTIFF)

                                                               The above-mentioned geodatabase on
                                                               Armenian WOC, the ArcGIS project
                                                               file and the present report are included
                                                               in the CDs that were fired as final
                                                               output of the assignment. The photo
                                                               on the left-hand side presents the
                                                               design of the cover of CDs.


The coding of water objects, namely river network, catchment areas, lakes and reservoirs, provides an
opportunity to integrate the databases of various institutions involved in the State Water Cadastre into
a single information system. The summary information of this system is incorporated into the Data
Warehouse. Water Objects Coding system provided for a GIS-based tool for linking relational
databases of the stakeholder institutions involved in the SWC Information System.

Currently, as a result of this successful endeavor, Armenia has completed coding of all water objects
in its territory. This includes all the rivers longer than 5km, their catchment areas, all lakes, reservoirs,
as well as canals currently operating in the country. Meanwhile neighboring countries of Georgia and
Azerbaijan have adopted and completed coding of river network, which can serve as a basis for
sustained regional water sector cooperation and information sharing. Further progress of the work can
be achieved if applying the same system for coding of lakes, reservoirs and canals for the entire South
Caucasus region.

The digitization and coding of canals in Armenia will enhance proper management of water resources.
Since the canals represent artificial water bodies according to Water Framework Directive, the
integration of all available data on canals under the unique identifier will certainly be a very useful
tool for characterization of the basins, delineation of water bodies and development of integrated river
basin management plans.

After implementation of similar activity in neighboring countries, it will be possible to harmonize
Armenian water object codes into the comment South Caucasian regional coding system. This will
serve as a starting point for development of joint transboundary management information systems for
the South Caucasus region.


                          Digitization and Coding of Canals in Armenia
The coding of water objects of Armenia was initiated in 2006 as a part of development of the State
Water Cadastre Information System. The main objective of the activity is to assign each water object
a unique identifier that will be used to link data from various databases into a single consolidated
information system. The same identifier would be used for mapping and geo-referencing all water
objects in Armenia.

The activity was implemented in three stages during 2006-2008. At the first stage international
experience was studied and European River and Catchment Area (ERICA) coding system was
selected for coding the water object in Armenia. The methodology was enhanced to provide for
digitization and coding of river network, catchment areas, lakes and reservoirs of Armenia. At the
second stage the digitization and coding of Armenian rivers and catchment areas were implemented.
As a result each river, tributary and stream of more than 5km in length got a unique identifier. In total
the territory of Armenia was delineated into 1998 river sections and corresponding 1998 catchment
areas. During the second stage coding of Armenian lakes and reservoirs were implemented using the
same methodology. As a final outcome the established database covered 561 lakes and 314 reservoirs
throughout the country.

The overall work was implemented and the results were provided on the GIS maps of 1:25,000 scale.
Currently only digitization and coding of the canals of Armenia are pending to complete the overall
geodatabase of water objects.

Tasks under the assignment
• Adjust the Armenian methodology of Water Objects Coding for canals. The methodology will be
   based on European River and Catchment Area (ERICA) coding system;
•   Digitize canals using base maps of the 1:25,000 scale. Establish a digital database in ArcGIS
    format for all canals existing in Armenia;
•   Assign unique identifier to each digitized canal according to the developed methodology;
•   Finalize the water objects coding geodatabase of Armenia;
•   Prepare a final report on methodology and coding of canals in Armenia.

Total duration of the activity: 10 weeks


                                            Task                                              Duration
Adjusting the water objects coding methodology for Armenia to accommodate for
                                                                                             1 week
coding of canals
Digitizing canals of Armenia into a GIS layer (scale: 1:25,000)                              4 weeks
Coding of digitized canals according to the developed methodology                            2 weeks
Review and correction of the gaps identified during the activity                             1 week
Incorporation of canals coding system into a single water objects coding geodatabase         1 week
Preparation of a final report on digitization and coding of canals in Armenia                1 week



 #       ID               WOC         Shape_Length                      Name_Eng                      Type
     1   244      49201                47600,72663   Armavir main canal                            Main canal
     2    29      4920101              6782,983759   Gharaghala pump station tail-race             Raceway
     3        6   4920102              10525,17349   Coastal branch canal                          Tertiary
     4        7   492010201            10656,12868   Margara canal                                 Tertiary
     5    10      49201020101           2553,46815   1-3K-1 Distributive                           Distributive
     6   248      492010202            15554,52112   Mrgashat canal                                Tertiary
     7        9   49201020201          12092,11469   Tandzut canal                                 Tertiary
     8        4   4920103              12311,93455   Bambakashat canal                             Tertiary
     9    13      4920104              3273,826894   Hushakert water station tail-race             Raceway
  10          5   4920105              3381,958286   #10 interfarm Distributive                    Distributive
  11     184      4920206080101        23110,75598   Vorotan main canal                            Main canal
  12     186      4920206080401        2589,882233   Karahunj reservoir headrace                   Raceway
  13      89      4920206081001        6606,245419   Karahunj reservoir headrace                   Raceway
  14      50      4920206120101        7129,706133   Karahunj reservoir tail-race                  Raceway
  15     148      49202062701          4005,135518   Uyts headrace                                 Raceway
  16     102      4920206280101        3796,822846   Nursery garden canal                          Tertiary
  17      90      492020628020201      3609,770207   Uyts water station tail-race                  Raceway
  18     149      492020628020202      8064,537333   Uyts water station tail-race                  Raceway
  19     104      492020628020203      1079,833843   Uyts headrace                                 Raceway
  20     150      492020628020204      934,1531703   Uyts headrace                                 Raceway
  21     151      492020628020401      1749,243924                                                 Tertiary
  22     101      492020628020402      5096,700726                                                 Tertiary
  23     176      492020628040501      8592,960158                                                 Tertiary
  24     189      49202062804050101     1650,52977                                                 Distributive
  25     173      4920206280601        1154,734096                                                 Tertiary
  26     190      492020628120401      7279,329932                                                 Tertiary
  27     169      492020628140201      14269,86078                                                 Tertiary
  28     170      4920206420201        3596,843225                                                 Tertiary
  29     188      4920206421201        3944,408744                                                 Tertiary
  30     191      4920206520301        43010,50136   Spandaryan canal                              Tertiary
  31      81      49202066901          20254,47404   Gndevaz canal                                 Tertiary
                                                     Knndzoresk #2 water station tail-race right
  32      52      49202080101           11450,2175                                                 Raceway
  33     165      492221201             21345,0705   Karchevan canal                               Tertiary
  34     163      492221601            4344,959201                                                 Tertiary
  35     168      492222201            3622,934352                                                 Tertiary
  36     109      49228080101          4608,514643   Areni-Khachik water station headrace          Raceway
  37     107      492281701            1900,403837   Getap-Aghavnadzor water station headrace      Raceway
  38     105      49228180201          5732,205394   Getap-Aghavnadzor pump station Arpi branch    Tertiary
  39      60      49228180401           9757,39677   Rind canal                                    Tertiary
  40      64      49228240201          2958,349357   Gladzor canal                                 Tertiary
  41      61      49228240401          5669,631191   Getap-Eghegnadzor canal                       Tertiary
  42      62      49228240701          9406,342659   Shatin-Getap canal                            Tertiary
  43     213      49228240702          5205,048296   HPP canal                                     Tertiary
  44      63      49228260101           1821,08557   Vernashen-Gladzor canal                       Tertiary

#    ID             WOC       Shape_Length                        Name_Eng                      Type
45   108      492283901        8391,607146   Malishka-Eghegnadzor canal                      Tertiary
46   106      492284501        6009,848725   Vaik canal                                      Tertiary
47   177      49228660301      13981,55074   Kechut canal                                    Tertiary
48   155      492340101        7729,423055                                                   Tertiary
49   228      492340102        46827,23144   Yeraskh canal                                   Tertiary
50   239      49234040101      14131,65737   Garni canal                                     Tertiary
51   110      492360301        23058,83389   Ejmiatsin canal                                 Tertiary
52    27      492360302        20992,92936   Musaler canal                                   Tertiary
53    26      49236030201      3236,500561   Musaler canal                                   Tertiary
54   118      492360303        1607,170031   Nor Dalma canal                                 Tertiary
55   230      492360501        55198,60313   Artashat canal                                  Tertiary
56    14      492360502        61413,33629   Lower Hrazdan canal                             Tertiary
57    16      49236050201      2362,383855   Lower Hrazdan canal 3a branch                   Tertiary
58    18      49236050202      2917,268126   Lower Hrazdan canal 5 branch                    Tertiary
59    37      492360701        90210,56737   Arzni-Shamiram canal                            Tertiary
60   119      49236070101      16209,38038   Arzni branch canal                              Tertiary
61   291      49236070102      10620,47298   Kosh branch                                     Tertiary
62   121      4923607010201    1060,617772   VR-2                                            Distributive
63   120      4923607010202    3807,254456   VR-3                                            Distributive
64   129      492360801        9838,370595   Zoravan headrace                                Tertiary
65    93      49236100201      9649,473187   Yernjatap main canal                            Main canal
66   227      492362601        10974,05436   Hrazdan-Solak canal                             Distributive
67   131      492362701        5057,996542   Ddmashen canal                                  Tertiary
68    65      492363701        6473,262741   Tsovak #1 canal                                 Tertiary
69    88      492363702        2313,034845   Ruins canal                                     Tertiary
70    83      49236400101      6761,329368   Noratus left branch canal                       Tertiary
71    70      49236400102      10806,39267   Noratus right branch canal                      Tertiary
72    85      4923640040501    4863,531906   Sarukhan water station tail-race left branch    Raceway
73   124      49236400701      5957,983142   Sarukhan gravity canal                          Tertiary
74    84      49236400702      493,9539759   Sarukhan water station headrace                 Raceway
75   123      49236400703      2425,735547   Sarukhan water station tail-race right branch   Raceway
76   116      49236500101      4074,621872                                                   Tertiary
77   221      49236500102      1756,601569                                                   Tertiary
78   222      49236640101      4898,343263   Getashen canal                                  Tertiary
79   117      4923664010101    8588,271383                                                   Distributive
80    71      49236640102      6391,173701   Additional canal                                Tertiary
81    72      49236680501      19310,33546   Manas ditch                                     Ditch
82    73      49236760301      4333,688491   Zuskar lower ditch                              Ditch
83    77      49236920201      5348,604994   Tsovinar big ditch                              Ditch
84    80      492369601        6162,175072   Ruins canal                                     Tertiary
85    76      49236960301      3602,410625   Tsovinar #2 canal                               Tertiary
86    75      49236960501      3605,685784   Makenis canal                                   Tertiary
87   224      49236980401        26230,905   Masrik canal                                    Tertiary
88    78      49236980402       7786,31887   HPP canal                                       Tertiary
89    92      49236980901      2527,754388   Geghamabak canal                                Tertiary
90        1   492380101        4239,450087   Sevjur-Hrazdan headrace                         Raceway

#     ID             WOC         Shape_Length                        Name_Eng             Type
91     15      49238020101        16546,88108   Ajgeshat Shah-Arkh canal               Tertiary
92     17      49238020301        1227,492436   Kasakh additional canal                Tertiary
93     82      49238021101        16459,22328   Eghvard canal                          Tertiary
94    132      4923802120101      7053,547011   Kuchak main canal                      Main canal
95    133      4923802120102      4003,702583   Hushakert water station distributive   Distributive
96    429      492380301          11456,18957                                          Tertiary
97    427      492380302          2179,098253   Metsamor water station tail-race       Raceway
98         2   492380303          11454,69928   Aknalich lower canal                   Tertiary
99     20      492380304          4728,502509   Aknalich upper canal                   Tertiary
100    95      492380305          16077,94984   Metsamor canal                         Tertiary
101    94      49238030501        7465,143258   Sevjur left branch canal               Tertiary
102   241      492380306          14638,60693   Jrarat canal                           Tertiary
103    24      49238030601        7407,262334   Apaga-Lusagyugh canal                  Tertiary
104   270      49238060401        6388,381808   Ashnak distributive                    Distributive
105   127      4923806040101      4869,765299   Ashnak new distributive                Distributive
106   126      49238060701        7835,785979   Akunk distributive                     Distributive
107    30      492380901          4510,865064   Ashnak-Zovasar canal                   Tertiary
108   275      492381601          9448,049668   Areg canal                             Tertiary
109   276      49238160101        9425,755332   Suser distributive                     Distributive
110   125      492382101          7229,151506   Mastara distributive                   Distributive
111   257      492400101          41406,00831   Talin main canal                       Main canal
112   265      49240010101        25205,12276   Talin main canal 3rd stage             Main canal
113    36      49240010102        12715,13148   Talin main canal left branch           Main canal
114   409      49240010103        23961,03846   Talin main canal 2nd stage             Main canal
115   360      4924001010301      9879,559794   R-3 distributive                       Distributive
116   111      492400101030101    5712,982061   R-3 distributive                       Distributive
117   113      4924001010302      8224,232305   R-4 distributive                       Distributive
118   114      4924001010303      7973,644465   R-6 distributive                       Distributive
119    34      4924001010304      2182,643961   R-10 distributive                      Distributive
120   112      4924001010305      11381,90008   R-11 distributive                      Distributive
121   122      49240010104        6392,010212   MKh-3 distributive                     Distributive
122   251      49240010105         4663,39266   MKh-7 distributive                     Distributive
123    97      492400102          5482,145937   Bagaran-Yervandashat canal             Tertiary
124   277      492400301          5210,333901   Getap-Artik canal                      Tertiary
125    38      492401402060101    16507,07347   Aygabac canal                          Tertiary
126    44      49240140701        3061,384769   Meghrashen Distributive                Distributive
127   295      49240141301        14842,56358   Gharanghuright branch canal            Tertiary
128   297      4924014130101      5303,813737   Geghanist ditributary                  Distributive
129    47      49240141302        6124,853102   Gharanghu left branch canal            Tertiary
130    45      4924014130201      5434,194994   Getap ditributary                      Distributive
131   316      49240180301        12459,25544   Kaps canal                             Tertiary
132    68      492402301          26857,05991   Shirak main canal                      Tertiary
133   135      49240230101        1578,114581   7 ditributary                          Distributive
134   136      49240230102        1866,707953   17 ditributary                         Distributive
135   142      49240230103        2267,671514   15 ditributary                         Distributive
136   141      49240230104         2842,23708   16 ditributary                         Distributive

#     ID          WOC         Shape_Length                      Name_Eng                           Type
137   134   49240230105        3065,204303   18 ditributary                                     Distributive
138   137   49240230106        9629,414222   25 ditributary                                     Distributive
139   302   49240230107        31928,07007   26 distributive                                    Distributive
140   357   492403301           27862,0693   Akhuryan right branch canal                        Tertiary
141   356   49240330101        9634,323177   Left branch inter-farm distributive B-1            Distributive
142    41   49240330102        4103,243729   Kaps canal                                         Tertiary
143   145   4924033010201      4195,114246   Right branch canals upper canal                    Tertiary
144    42   49240330103        6266,505638   B-9 distributive                                   Distributive
145   362   49240330104        1912,984309   Right branch canals B-8 distributive               Distributive
146   144   49402020301        2956,136138   Chinar canal                                       Tertiary
147   336   49402020501        5608,814596   Aygedzor canal                                     Tertiary
148    59   494020501          6957,353798   Nerkin Karmiraghbyur canal                         Tertiary
149   100   494020901          3941,259939   Berd canal                                         Tertiary
150   334   494063001          11909,81596   Khashtarak canal                                   Tertiary
151   332   494101301          1439,694784   Noyemberyan water station canals right branch      Tertiary
152   147   49412020201        6526,289563   Noyemberyan water station canals left branch       Tertiary
                                             Noyemberyan water st. main canals Tumanyan
153   146   49412020501        1685,498199                                                      Main canal
154    55   49412040101        1893,272169   Hay ditch                                          Ditch
155    54   49412040401        8093,408823   Zeytun-Haghtanak water station left branch canal   Tertiary
156   331   49412040402        6467,399007   Zeytun-Haghtanak water station left branch canal   Tertiary
157    57   49412040403        9557,220934   Zeytun-Haghtanak water station left branch canal   Tertiary
158   330   49412040404        4622,795976   Zeytun-Haghtanak water station left branch canal   Tertiary
159   329   49412040405        5001,300282   Zeytun-Haghtanak water station left branch canal   Tertiary
160    56   49412040406        6057,081297   Zeytun-Haghtanak water station left branch canal   Tertiary
161    58   49412040501        14470,41186   Debetavan canal                                    Tertiary
162   156   49412041501        3923,910157                                                      Tertiary
163   342   4941204380601      1913,548998                                                      Tertiary
164   143   4941204381301      7316,091227   Amrakits canal                                     Tertiary
165   337   494120438160101    42783,76309   Lori canal                                         Tertiary
166   159   494120440300301    2756,053086                                                      Tertiary
167   162   494120440300302    4099,956311                                                      Tertiary
168   161   494120440300303    6612,112745                                                      Tertiary
169   346   4941204404501      5775,924951                                                      Tertiary
170   157   494120440520101    44524,41441   Mikoyan canal                                      Tertiary


1. Coding of Water Objects in the Republic of Armenia: Methodology and its Application in a Pilot
   Basin, Yerevan, 2006.

2. P. Britton. Review of Existing River Coding Systems for River Basin Management and Reporting.
   WFD, GIS Working Group, 2002.

3. Proposal for a European coding system for hydrological features, 2nd Draft. Based upon a proposal
   made by the Coding group chaired by A. Wirthmann. Revised by A. Jager, 2007.

4. The Basic Problems of Rational Use and Conservation of Water Resources of the Republic of
   Armenia. Published with the financial support of the UNESCO Moscow Office, 2007. Yerevan.

5. Water Objects Coding for Lakes and Reservoirs of Armenia, Yerevan, 2008.


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