Impact with Rain Barrels
600.0
500.0
400.0
Volume of water (gallon)
300.0
Average Gallons collected (monthly)
Impact with Rain Barrels (monthly)
200.0
100.0
0.0
April May June July August September
Month
Roof Area Roof Area covered Average Monthly Precipitation (in)
1336 668 April 3.5
1936 968 May 4.3
1560 780 June 4.3
3420 1710 July 4
2516 1258 August 3.5
2516 1258 September 2.8
2068 1034
1489 744.5 Assumption:
1870 935 Homeowners use barrels completely bi-monthly (100 gal)
1584 792 1" rain fills barrel for 100 sq ft
2726 1363
1270 635
1628 814 1 in (1200 sq ft) annually
1408 704 673.0769231
2698 1349
1074 537 1062.5
2736 1368
1918 959 Average gallons collected(monthly)
3255 1627.5
1396 698
1516 758
2782 1391
1142 571
1840 920
1186 593
2787 1393.5
1072 536
990 495
1100 550
1118 559
2503 1251.5
1525 762.5
2223 1111.5
3688 1844
3103 1551.5
885 442.5
2724 1362
2008 1004
2811 1405.5
775 387.5
2400 1200
1640 820
1950 975
1950 975
1500 750
1850 925
2400 1200
870 435
2000 1000
2100 1050
2200 1100
1850 925
1660 830
1116 558
1960 980
1194 597
1610 805
1975 987.5
2377 1188.5
1077 538.5
1676 838
1943 971.5
1417 708.5
1930 965
1950 975
1955 977.5
1415
Total Roof Area: 126147 Total Area in Acres: 2.9
Average Roof Area: 1882.79 Averahe area in acres 0.0433
Average Daily Precipitation (in) Average Gallons collected (monthly)
0.1167 397.1
0.1387 487.9
0.1433 487.9
0.1290 453.9
0.1129 397.1
0.0933 317.7
mpletely bi-monthly (100 gal)
1 in (1883 sq ft) annually
1056.052669 Gallons of Rain Monthly
1361.55 113.4628017
1667.054571
Average Gallons collected (daily) Impact with Rain Barrels (monthly)
13.2 317.7
15.7 393.5
16.3 390.3
14.6 366.0
12.8 320.3
10.6 254.2
Impact with Rain Barrels (daily) Change with Rain Barrels (monthly)
79.4
94.4
97.6
87.8
76.9
63.5
Change with Rain Barrels (daily)
Impact with 100 Rain Barrels
70000
67700 67700
66400 66400
65000
63000
61700
Average Runoff (ft³)
60000
55000 55100
55000
53800 53800
Total runoff monthly
Total runoff with Rain Barrels
50000
45000 44100
42800
40000
April May June July August September
Month
Average Monthly Precipitation (in)
April 3.5
May 4.3
June 4.3
July 4
August 3.5
September 2.8
Amount of water received in 1 acre when 1 inch rain occurs:
27,154 gallon
I gallon = 0.134 cubic feet
Average roof area in acre: 0.0433
Assumption:
Homeowners use barrels completely bi-monthly (100 gal)
1" rain fills barrel for 100 sq ft
Average rain collected in gallon Average rain collected in cubic feet (monthly)
4115.1887 551.4352858
5055.80326 677.4776368
5055.80326 677.4776368
4703.0728 630.2117552
4115.1887 551.4352858
3292.15096 441.1482286
Impact with rain barrel Total runoff monthly
538.0 55143.5
664.1 67747.8
664.1 67747.8
616.8 63021.2
538.0 55143.5
427.7 44114.8
Total runoff with Rain Barrels
53803.5
66407.8
66407.8
61681.2
53803.5
42774.8