Valdosta, GA rainwater: 43,412 gallons off a roof
Valdosta, GA: gallons off the roof each year
43,412gallons a year
That is a 1,500 sq ft asphalt roof under Valdosta, GA's normal 54.6 inches of rain, about 795 gallons for every inch that falls.
In Valdosta, 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 Valdosta 2.8 Nnw station (2.7 mi away). Valdosta, GA ranks 19th wettest of the 101 cities covered in Georgia.
Month by month in Valdosta
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 4.93 | 3,918 | |
| Feb | 4.53 | 3,600 | |
| Mar | 5.06 | 4,022 | |
| Apr | 3.64 | 2,893 | 89 |
| May | 2.82 | 2,241 | 191 |
| Jun | 6.96 | 5,532 | |
| Jul | 6.44 | 5,119 | |
| Aug | 5.09 | 4,046 | |
| Sep | 5.17 | 4,109 | |
| Oct | 3.29 | 2,615 | 132 |
| Nov | 2.96 | 2,353 | |
| Dec | 3.73 | 2,965 |
Jun is the wettest month (6.96 in, 5,532 gal off the roof); May the driest (2.82 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 Valdosta
Best fit: one 55-gallon barrel, which delivers about 349 gallons to the garden in a normal year (84.8% of its need).
If you buy one, a 55-gallon barrel with a downspout diverter is the whole job. Check that the overflow points away from your foundation, because most of Valdosta's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 349 | 42,043 |
| 110 gal | 349 | 42,043 |
| 165 gal | 349 | 42,043 |
| 275 gal | 349 | 42,043 |
| 550 gal | 349 | 42,043 |
| 1,000 gal | 349 | 42,043 |
| 1,500 gal | 349 | 42,043 |
| 2,500 gal | 349 | 42,043 |
| 5,000 gal | 349 | 42,043 |
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