RoofRainYield

South Ogden, UT rainwater: 13,003 gallons off a roof

How much rain a roof in South Ogden, UT collects

13,003gallons a year

That is a 1,500 sq ft asphalt roof under South Ogden, UT's normal 16.4 inches of rain, about 795 gallons for every inch that falls.

South Ogden, UT has gaps between storms long enough to drain a single barrel. Around 275 gallons of storage catches most of what is worth catching.

Rainfall: NOAA 1991-2020 climate normals, the Ogden Hinkley Ap station (3.2 mi away). South Ogden, UT ranks 55th wettest of the 67 cities covered in Utah.

Month by month in South Ogden

MonthRain (in)Off the roof (gal)Garden shortfall (gal)
Jan1.531,216
Feb1.551,232
Mar1.711,359
Apr1.971,566297
May2.171,725272
Jun1.12890403
Jul0.35278499
Aug0.72572453
Sep1.06842410
Oct1.681,335333
Nov1.17930
Dec1.331,057

May is the wettest month (2.17 in, 1,725 gal off the roof); Jul the driest (0.35 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 South Ogden

Best fit: a 275-gallon tote or tank, which delivers about 2,302 gallons to the garden in a normal year (86.4% of its need).

Before you buy, link barrels with a short hose at the base so they fill and drain together, and check the overflow points away from the house.

TankWater used (gal/yr)Spills over (gal/yr)
55 gal1,19611,162
110 gal1,76710,591
165 gal2,03510,323
275 gal2,30210,056
550 gal2,4039,955
1,000 gal2,4039,955
1,500 gal2,4039,955
2,500 gal2,4039,955
5,000 gal (over cap)2,4039,955

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 Utah?

Up to 2 covered containers of max 100 gal each with no registration; with free registration at the Utah Division of Water Rights, total storage up to 2,500 gal. Use limited to the same parcel where captured.

Checked against the current source on 2026-11-06. Source