East Bethel, MN rainwater: 27,325 gallons off a roof
Rainwater from a roof in East Bethel, MN
27,325gallons a year
That is a 1,500 sq ft asphalt roof under East Bethel, MN's normal 34.4 inches of rain, about 795 gallons for every inch that falls.
In East Bethel, MN a single barrel does most of the work. Storms come often enough that a small tank refills before it runs dry, and a bigger one would mostly sit full.
Rainfall: NOAA 1991-2020 climate normals, the Cedar station (3.9 mi away). East Bethel, MN ranks 13th wettest of the 103 cities covered in Minnesota.
Month by month in East Bethel
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 0.87 | 691 | |
| Feb | 1.00 | 795 | |
| Mar | 1.83 | 1,454 | |
| Apr | 3.32 | 2,639 | 128 |
| May | 4.26 | 3,386 | 11 |
| Jun | 4.62 | 3,672 | |
| Jul | 4.79 | 3,807 | |
| Aug | 4.07 | 3,235 | 35 |
| Sep | 3.08 | 2,448 | 158 |
| Oct | 3.10 | 2,464 | 156 |
| Nov | 1.92 | 1,526 | |
| Dec | 1.52 | 1,208 |
Jul is the wettest month (4.79 in, 3,807 gal off the roof); Jan the driest (0.87 in). Garden shortfall is what a 200 sq ft vegetable bed needs beyond the rain that lands on it, April to October.
What size rain barrel for East Bethel
Best fit: one 55-gallon barrel, which delivers about 392 gallons to the garden in a normal year (80.2% of its need).
Before you buy, a 55-gallon barrel with a downspout diverter is the whole job. Check that the overflow points away from your foundation, because most of East Bethel's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 392 | 25,943 |
| 110 gal | 392 | 25,943 |
| 165 gal | 392 | 25,943 |
| 275 gal | 392 | 25,943 |
| 550 gal | 392 | 25,943 |
| 1,000 gal | 392 | 25,943 |
| 1,500 gal | 392 | 25,943 |
| 2,500 gal | 392 | 25,943 |
| 5,000 gal | 392 | 25,943 |
Simulated storm by storm through a normal year using the station's count of days with 0.1 in or more of rain each month.
Is rainwater collection legal in Minnesota?
No statewide rainwater harvesting regulations; check county for local incentives
From the 2015 (Pacific Northwest National Laboratory report 24347); not yet re-checked against current law, so check with your state water agency before building anything large. Source