Cartersville, GA rainwater: 41,242 gallons off a roof
Cartersville, GA: gallons off the roof each year
41,242gallons a year
That is a 1,500 sq ft asphalt roof under Cartersville, GA's normal 51.9 inches of rain, about 795 gallons for every inch that falls.
In Cartersville, 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 Cartersville #2 station (1.3 mi away). Cartersville, GA ranks 60th wettest of the 101 cities covered in Georgia.
Month by month in Cartersville
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 4.87 | 3,871 | |
| Feb | 5.00 | 3,974 | |
| Mar | 4.96 | 3,942 | |
| Apr | 4.27 | 3,394 | 10 |
| May | 4.05 | 3,219 | 37 |
| Jun | 4.36 | 3,465 | |
| Jul | 5.18 | 4,117 | |
| Aug | 3.85 | 3,060 | 62 |
| Sep | 3.87 | 3,076 | 60 |
| Oct | 3.45 | 2,742 | 112 |
| Nov | 4.08 | 3,243 | |
| Dec | 3.95 | 3,139 |
Jul is the wettest month (5.18 in, 4,117 gal off the roof); Oct the driest (3.45 in). Garden shortfall is what a 200 sq ft vegetable bed needs beyond the rain that lands on it, April to October.
Which tank size is worth it in Cartersville
Best fit: one 55-gallon barrel, which delivers about 231 gallons to the garden in a normal year (82.0% 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 Cartersville's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 231 | 39,797 |
| 110 gal | 231 | 39,797 |
| 165 gal | 231 | 39,797 |
| 275 gal | 231 | 39,797 |
| 550 gal | 231 | 39,797 |
| 1,000 gal | 231 | 39,797 |
| 1,500 gal | 231 | 39,797 |
| 2,500 gal | 231 | 39,797 |
| 5,000 gal | 231 | 39,797 |
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