RoofRainYield

North Bend, OR rainwater: 47,005 gallons off a roof

Rainwater from a roof in North Bend, OR

47,005gallons a year

That is a 1,500 sq ft asphalt roof under North Bend, OR's normal 59.1 inches of rain, about 795 gallons for every inch that falls.

North Bend, OR has gaps between storms long enough to drain a single barrel. Around 550 gallons of storage catches most of what is worth catching.

Rainfall: NOAA 1991-2020 climate normals, the North Bend Rgnl Ap station (0.6 mi away). North Bend, OR ranks 4th wettest of the 57 cities covered in Oregon.

Month by month in North Bend

MonthRain (in)Off the roof (gal)Garden shortfall (gal)
Jan9.437,495
Feb6.995,556
Mar7.495,953
Apr5.404,292
May2.952,345175
Jun1.551,232349
Jul0.35278499
Aug0.42334490
Sep1.551,232349
Oct4.243,37014
Nov8.306,597
Dec10.478,322

Dec is the wettest month (10.47 in, 8,322 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.

What size rain barrel for North Bend

Best fit: a 550-gallon tote or tank, which delivers about 1,707 gallons to the garden in a normal year (91.0% of its need).

If you buy one, 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 gal72244,648
110 gal99944,371
165 gal1,16444,206
275 gal1,48243,888
550 gal1,70743,663
1,000 gal1,70743,663
1,500 gal1,70743,663
2,500 gal1,70743,663
5,000 gal1,70743,663

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 Oregon?

Collecting and using rain from an artificial impervious surface (e.g. a rooftop) is an exempt use: no water right application, permit or certificate needed. Statute sets no storage cap in this section.

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