Muskogee, OK rainwater: 34,296 gallons off a roof
Rainwater from a roof in Muskogee, OK
34,296gallons a year
That is a 1,500 sq ft asphalt roof under Muskogee, OK's normal 43.2 inches of rain, about 795 gallons for every inch that falls.
In Muskogee, OK 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 Muskogee station (2.7 mi away). Muskogee, OK ranks 11th wettest of the 45 cities covered in Oklahoma.
Month by month in Muskogee
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 1.94 | 1,542 | |
| Feb | 2.36 | 1,876 | |
| Mar | 3.09 | 2,456 | |
| Apr | 4.88 | 3,879 | |
| May | 5.25 | 4,173 | |
| Jun | 5.00 | 3,974 | |
| Jul | 3.32 | 2,639 | 128 |
| Aug | 3.14 | 2,496 | 151 |
| Sep | 4.31 | 3,426 | 5 |
| Oct | 4.07 | 3,235 | 35 |
| Nov | 3.23 | 2,567 | |
| Dec | 2.56 | 2,035 |
May is the wettest month (5.25 in, 4,173 gal off the roof); Jan the driest (1.94 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 Muskogee
Best fit: one 55-gallon barrel, which delivers about 277 gallons to the garden in a normal year (86.8% of its need).
If you set one up, a 55-gallon barrel with a downspout diverter is the whole job. Check that the overflow points away from your foundation, because most of Muskogee's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 277 | 33,074 |
| 110 gal | 277 | 33,074 |
| 165 gal | 277 | 33,074 |
| 275 gal | 277 | 33,074 |
| 550 gal | 277 | 33,074 |
| 1,000 gal | 277 | 33,074 |
| 1,500 gal | 277 | 33,074 |
| 2,500 gal | 277 | 33,074 |
| 5,000 gal | 277 | 33,074 |
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 Oklahoma?
Encouraged through state legislation: Water for 2060 Act
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