City of Portland HYDRA Rainfall Network

The HYDRA rainfall network is operated and maintained by the City of Portland Bureau of Environmental Services. Rainfall data are provided with their permission and cooperation.

Location Map
Click on the map below to open a full-screen map with links to each station.

Rainfall data for these sites are updated hourly.

[23-Nov-2024] The Thirteenth Ave (#987) rain gage was added to the network. Data since July will be added later.

Disclaimer: Rainfall data on this page have not received final approval and as such are provisional and subject to final revision. The data are released on the condition that neither the USGS, the United States Government, nor the City of Portland may be held liable for any damages resulting from their use. More information about the quality of precipitation data is available.

A water year is defined as the 12-month period beginning October 1 of any year and continuing through September 30 of the following year. The water year is designated by the calendar year in which it ends and which includes 9 of the 12 months. Thus, the water year ending September 30, 2018 is called the 2018 water year.

Portland area average rainfall from HYDRA network, by water year
WY 2010: 41.89" (28 sites)	WY 2015: 36.09" (28 sites)	WY 2020: 32.01" (41 sites)
WY 2011: 53.40" (32 sites)	WY 2016: 53.62" (35 sites)	WY 2021: 36.70" (39 sites)
WY 2012: 46.57" (36 sites)	WY 2017: 58.79" (38 sites)	WY 2022: 48.10" (36 sites)
WY 2013: 47.99" (33 sites)	WY 2018: 36.33" (37 sites)	WY 2023: 40.64" (40 sites)
WY 2014: 34.51" (36 sites)	WY 2019: 35.54" (39 sites)	WY 2024: 46.42" (41 sites)

City of Portland Rain Gages
Station Name	Sta. No.	Time of Latest Reading	Accumulation (inches)	Data
1-day	3-day	5-day	Dec	Water Year
Portland Area Summary
Portland area -- average rainfall, 46 gages, not including the Thirteenth Ave rain gage, or the Cottrell School rain gage, which is outside of the general Portland area.	0.10	0.25	0.43	3.61	15.14
Historical Portland area average rainfall from HYDRA network stations *through today's date* (at least 25 years of data)	4.76	14.08
Portland area average rainfall from HYDRA network stations *through today's date* for the previous year	8.09	16.59
North Region
North region -- average rainfall, 9 gages.	0.11	0.26	0.38	3.64	15.43
Hayden Island Rain Gage 1740 N Jantzen Beach Ctr.	762	22-Dec-2024, 10:27	0.11	0.23	0.36	3.65	15.07	data table
Shipyard Rain Gage 8900 N Sever Road	993	22-Dec-2024, 10:27	0.10	0.28	0.40	3.24	14.58	data table
Columbia IPS Rain Gage 5001 N Columbia Blvd.	773	22-Dec-2024, 10:27	0.12	0.28	0.42	3.83	16.23	data table
Albina Rain Gage 2920 N Larrabee Ave.	776	22-Dec-2024, 10:27	0.10	0.22	0.33	3.42	14.27	data table
Simmons Rain Gage 16001 N Simmons Rd.	1161	22-Dec-2024, 10:27	0.12	0.30	0.43	3.86	16.37	data table
Cascade PCC Rain Gage 705 N Killingsworth St.	787	22-Dec-2024, 10:27	0.12	0.24	0.33	3.40	14.64	data table
WPCL Rain Gage 6543 N Burlington Ave.	786	22-Dec-2024, 10:27	0.11	0.32	0.46	4.04	16.97	data table
Astor Elementary School Rain Gage 5601 N Yale St.	798	22-Dec-2024, 10:27	0.10	0.26	0.36	3.67	15.31	data table
Swan Island Rain Gage	1165	22-Dec-2024, 10:27	0.10	0.25	0.37	3.66	15.41	data table
North West Region
Northwest region -- average rainfall, 5 gages.	0.10	0.31	0.47	3.76	15.73
Skyline School Rain Gage 11536 NW Skyline Blvd.	758	22-Dec-2024, 10:27	0.11	0.39	0.60	3.74	14.76	data table
Sauvie Island School Rain Gage 14445 NW Charlton Rd.	759	22-Dec-2024, 10:27	0.11	0.34	0.49	4.53	17.25	data table
Yeon Rain Gage 3395 NW Yeon St.	778	22-Dec-2024, 10:27	0.10	0.29	0.43	3.89	16.82	data table
Metro Learning Center Rain Gage 2033 NW Glisan St.	793	22-Dec-2024, 10:27	0.10	0.23	0.38	3.49	15.48	data table
Bonny Slope BSD Rain Gage 11775 NW McDaniel Rd.	1207	22-Dec-2024, 10:27	0.10	0.32	0.46	3.15	14.32	data table
North East Region
Northeast region -- average rainfall, 10 gages, not including the Thirteenth Ave rain gage.	0.09	0.23	0.39	3.68	14.68
Fernwood School Rain Gage 3255 NE Hancock St.	764	22-Dec-2024, 10:27	0.09	0.23	0.40	3.47	14.42	data table
Vernon School Rain Gage 2044 NE Killingsworth St.	768	22-Dec-2024, 10:27	0.11	0.23	0.36	3.70	14.78	data table
Airport Way #2 Rain Gage 14614 NE Airport Way	774	22-Dec-2024, 10:27	0.08	0.20	0.42	3.82	15.67	data table
Mallory Rain Gage 8030 NE Mallory Ave.	775	22-Dec-2024, 10:27	0.11	0.23	0.33	3.53	13.84	data table
Beaumont School Rain Gage 4043 NE Fremont Ave.	783	22-Dec-2024, 10:27	0.10	0.24	0.37	3.43	13.68	data table
Post Office Rain Gage 7660 NE Airport Way	785	22-Dec-2024, 10:27	0.09	0.24	0.41	4.11	15.24	data table
Thirteenth Ave Rain Gage 9630 NE 13th Ave.	987	22-Dec-2024, 10:27	0.09	0.20	0.32	3.46	4.86	data table
Leodis V. McDaniel Rain Gage 2735 NE 82nd Ave.	1190	22-Dec-2024, 10:27	0.08	0.24	0.42	3.55	13.65	data table
Forty-Second Avenue Rain Gage NE 42nd Ave and Buffalo St.	1198	22-Dec-2024, 10:27	0.10	0.24	0.41	3.88	15.34	data table
Irvington Elementary School Rain Gage 1320 NE Brazee St.	1204	22-Dec-2024, 10:27	0.11	0.25	0.42	3.78	15.11	data table
Parkrose High School Rain Gage 12003 NE Shaver St.	1212	22-Dec-2024, 10:27	0.08	0.18	0.39	3.58	15.03	data table
South West Region
Southwest region -- average rainfall, 11 gages.	0.10	0.25	0.47	3.41	15.17
Portland Fire Bureau Rain Gage 55 SW Ash St.	757	22-Dec-2024, 10:27	0.10	0.25	0.41	3.67	15.48	data table
Sylvania PCC Rain Gage SS Bldg, 12000 SW 49th Ave.	760	22-Dec-2024, 10:27	0.10	0.26	0.57	3.41	15.60	data table
Collins View Rain Gage (Riverdale High School) 9806 SW Boones Ferry Rd.	763	22-Dec-2024, 10:27	0.10	0.25	0.52	3.62	15.80	data table
Sylvan School Rain Gage 1849 SW 58th Ave.	788	22-Dec-2024, 10:27	0.09	0.22	0.36	3.11	14.03	data table
Eco Roof Rain Gage SW 12th and Clay	789	22-Dec-2024, 10:27	0.10	0.23	0.40	3.59	15.45	data table
Maplewood Elementary School Rain Gage 7452 SW 52nd Ave.	792	22-Dec-2024, 10:27	0.10	0.23	0.44	3.18	14.41	data table
OPB Rain Gage 6932 SW Macadam Ave.	1191	22-Dec-2024, 10:27	0.10	0.30	0.55	3.87	16.55	data table
Ida B. Wells-Barnett High School Rain Gage 1151 SW Vermont St.	1203	22-Dec-2024, 10:27	0.08	0.23	0.42	3.10	14.19	data table
Fire Station 18 Rain Gage 8720 SW 30th Ave.	1211	22-Dec-2024, 10:27	0.11	0.27	0.54	3.47	15.63	data table
OHSU Marquam Hill Rain Gage 3310 SW U.S. Veterans Hospital Rd.	1221	22-Dec-2024, 10:27	0.12	0.26	0.48	3.43	15.04	data table
OHSU South Waterfront Rain Gage 3930 S Macadam Ave.	1222	22-Dec-2024, 10:27	0.09	0.25	0.44	3.05	14.69	data table
South East Region
Southeast region -- average rainfall, 11 gages.	0.10	0.24	0.44	3.63	15.04
Mt. Tabor Maintenance Yard Rain Gage 6437 SE Division St.	761	22-Dec-2024, 10:27	0.10	0.24	0.44	3.70	15.03	data table
Kelly School Rain Gage 9030 SE Cooper St.	765	22-Dec-2024, 10:27	0.09	0.15	0.42	3.52	14.50	data table
Gresham Fire Dept. Rain Gage 1333 NW Eastman Pkwy.	766	22-Dec-2024, 10:27	0.10	0.21	0.48	3.85	15.77	data table
Harney Rain Gage 2033 SE Harney St.	771	22-Dec-2024, 10:27	0.11	0.25	0.51	3.69	15.56	data table
Pleasant Valley School Rain Gage 17625 SE Foster Rd.	781	22-Dec-2024, 10:27	0.10	0.24	0.53	4.02	16.31	data table
Sunnyside School Rain Gage 3421 SE Salmon St.	791	22-Dec-2024, 10:27	0.10	0.28	0.28	3.43	15.22	data table
Arleta School Rain Gage 5109 SE 66th Ave.	794	22-Dec-2024, 10:27	0.10	0.23	0.42	3.46	14.02	data table
Glencoe School Rain Gage 825 SE 51st Ave.	795	22-Dec-2024, 10:27	0.10	0.28	0.45	3.52	14.67	data table
Multnomah Rain Gage 501 SE Hawthorne Blvd.	796	22-Dec-2024, 10:27	0.10	0.24	0.42	3.46	14.09	data table
Park SE Yard Rain Gage 5669 SE 136th Ave.	1194	22-Dec-2024, 10:27	0.09	0.21	0.45	3.86	15.83	data table
Cleveland High School Rain Gage 3400 SE 26th Ave.	1205	22-Dec-2024, 10:27	0.10	0.27	0.45	3.42	14.41	data table
Other
Cottrell School Rain Gage 36225 SE Proctor Rd., Boring	782	22-Dec-2024, 10:27	0.15	0.53	0.83	4.97	15.73	data table
Retired Stations
Open Meadows School Rain Gage 7602 N Emerald Ave.	48	Station was retired on 1-Jul-2019.	data table
Swan Island Rain Gage 122 2600 N Going St.	122	Station was retired on 27-Sep-2007.	data table
Marine Drive Rain Gage 7305 N Marine Dr.	137	Station was retired on 13-Jan-2010.	data table
Terminal 4 NE Rain Gage 11040 N Lombard St.	167	Station was retired on 25-Aug-2011.	data table
Bonny Slope School Rain Gage 10351 NW Thompson Rd.	58	Station was retired. Data through 08-Mar-2017.	data table
Guilds Lake Rain Gage 7110 NW Front Ave.	125	Station was retired on 23-Mar-2005.	data table
Skyline Fire Station Rain Gage 8031 NW Skyline Blvd.	147	Station was retired on 02-Nov-2003.	data table
PDX East Business Park Rain Gage 8599 NE Alderwood Rd.	9	Station was retired on 21-Sep-2004.	data table
Fremont Rain Gage 2777 NE Fremont Dr.	72	Station was retired on 12-Aug-2010.	data table
Grant Park Rain Gage 1907 NE 45th Ave.	162	Station was retired on 20-Oct-2004.	data table
Walmart Eco Roof Rain Gage 1123 N Hayden Meadows Dr.	220	Station was retired on 22-Mar-2023.	data table
Vermont Hills Rain Gage 5730 SW Idaho St.	89	Station was retired on 23-Jul-2002.	data table
Thomas Rain Gage 4026 SW Macadam Ave.	120	Station was retired on 23-Jul-2009.	data table
Children's Museum Rain Gage 4015 SW Canyon Rd.	192	Station was retired on 25-Aug-2021.	data table
Holgate Rain Gage 4507 SE 136th Ave.	21	Station was retired on 16-Feb-2012.	data table

City of Portland Rain Gages

Station Name

Sta.
No.

Time of
Latest Reading

Accumulation (inches)

Data

1-day

3-day

5-day

Dec

Water
Year

Portland Area Summary

Portland area -- average rainfall, 46 gages, not including the Thirteenth Ave rain gage, or the Cottrell School rain gage, which is outside of the general Portland area.

0.10

0.25

0.43

3.61

15.14

Historical Portland area average rainfall from HYDRA network stations through today's date (at least 25 years of data)

4.76

14.08

Portland area average rainfall from HYDRA network stations through today's date for the previous year

8.09

16.59

North Region

North region -- average rainfall, 9 gages.

0.11

0.26

0.38

3.64

15.43

Hayden Island Rain Gage
1740 N Jantzen Beach Ctr.

762

22-Dec-2024, 10:27

0.11

0.23

0.36

3.65

15.07

City of Portland HYDRA Rainfall Network

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