Waycross, GA rainwater: 40,074 gallons off a roof
How much rain a roof in Waycross, GA collects
40,074gallons a year
That is a 1,500 sq ft asphalt roof under Waycross, GA's normal 50.4 inches of rain, about 795 gallons for every inch that falls.
In Waycross, 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 Waycross 4 Ne station (3.8 mi away). Waycross, GA ranks 82nd wettest of the 101 cities covered in Georgia.
Month by month in Waycross
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 3.89 | 3,092 | |
| Feb | 3.71 | 2,949 | |
| Mar | 3.95 | 3,139 | |
| Apr | 3.13 | 2,488 | 152 |
| May | 3.32 | 2,639 | 128 |
| Jun | 6.80 | 5,405 | |
| Jul | 5.93 | 4,713 | |
| Aug | 6.84 | 5,436 | |
| Sep | 4.46 | 3,545 | |
| Oct | 3.28 | 2,607 | 133 |
| Nov | 2.22 | 1,764 | |
| Dec | 2.89 | 2,297 |
Aug is the wettest month (6.84 in, 5,436 gal off the roof); Nov the driest (2.22 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 Waycross
Best fit: one 55-gallon barrel, which delivers about 356 gallons to the garden in a normal year (86.0% 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 Waycross's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 356 | 38,653 |
| 110 gal | 356 | 38,653 |
| 165 gal | 356 | 38,653 |
| 275 gal | 356 | 38,653 |
| 550 gal | 356 | 38,653 |
| 1,000 gal | 356 | 38,653 |
| 1,500 gal | 356 | 38,653 |
| 2,500 gal | 356 | 38,653 |
| 5,000 gal | 356 | 38,653 |
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