Moultrie, GA rainwater: 39,740 gallons off a roof
Moultrie, GA: gallons off the roof each year
39,740gallons a year
That is a 1,500 sq ft asphalt roof under Moultrie, GA's normal 50.0 inches of rain, about 795 gallons for every inch that falls.
In Moultrie, GA 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 Moultrie 2 Ese station (2.5 mi away). Moultrie, GA ranks 85th wettest of the 101 cities covered in Georgia.
Month by month in Moultrie
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 4.77 | 3,791 | |
| Feb | 4.29 | 3,410 | |
| Mar | 5.19 | 4,125 | |
| Apr | 3.54 | 2,814 | 101 |
| May | 2.67 | 2,122 | 209 |
| Jun | 5.68 | 4,514 | |
| Jul | 5.50 | 4,371 | |
| Aug | 4.57 | 3,632 | |
| Sep | 4.42 | 3,513 | |
| Oct | 2.92 | 2,321 | 178 |
| Nov | 2.86 | 2,273 | |
| Dec | 3.59 | 2,853 |
Jun is the wettest month (5.68 in, 4,514 gal off the roof); May the driest (2.67 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 Moultrie
Best fit: one 55-gallon barrel, which delivers about 428 gallons to the garden in a normal year (87.6% 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 Moultrie's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 428 | 38,278 |
| 110 gal | 428 | 38,278 |
| 165 gal | 428 | 38,278 |
| 275 gal | 428 | 38,278 |
| 550 gal | 428 | 38,278 |
| 1,000 gal | 428 | 38,278 |
| 1,500 gal | 428 | 38,278 |
| 2,500 gal | 428 | 38,278 |
| 5,000 gal | 428 | 38,278 |
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 Georgia?
Legal. Outdoor irrigation use is unrestricted; indoor non-potable systems must follow Appendix I 'Rainwater Recycling Systems' of the Georgia amendments to the state plumbing code. No state storage cap; potable use depends on local rules.
Checked against the current source on 2026-11-06. Source