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Oregon Water Science Center

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.

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 2012: 46.57" (36 sites) WY 2016: 53.62" (35 sites) WY 2020: 32.01" (41 sites)
WY 2013: 47.99" (33 sites) WY 2017: 58.79" (38 sites) WY 2021: 36.70" (39 sites)
WY 2014: 34.51" (36 sites) WY 2018: 36.33" (37 sites) WY 2022: 48.10" (36 sites)
WY 2015: 36.09" (28 sites) WY 2019: 35.54" (39 sites) WY 2023: 40.64" (40 sites)
location map
City of Portland Rain Gages
Station Name Sta.
No.
Time of
Latest Reading
Accumulation (inches) Data
1-day 3-day 5-day Jul Water
Year
Portland Area Summary
Portland area -- average rainfall, 44 gages, not including the Irvington and South Waterfront rain gages, or the Cottrell School rain gage, which is outside of the general Portland area. 0.00 0.00 0.00 0.00 44.36  
Historical Portland area average rainfall from HYDRA network stations through today's date (at least 25 years of data) 0.16 35.29  
North Region
North region -- average rainfall, 9 gages. 0.00 0.00 0.00 0.00 44.49  
Hayden Island Rain Gage
1740 N Jantzen Beach Ctr.
762 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 41.98 data table
Shipyard Rain Gage
8900 N Sever Road
993 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 47.13 data table
Columbia IPS Rain Gage
5001 N Columbia Blvd.
773 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 48.77 data table
Albina Rain Gage
2920 N Larrabee Ave.
776 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 39.76 data table
Simmons Rain Gage
16001 N Simmons Rd.
1161 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 45.02 data table
Cascade PCC Rain Gage
705 N Killingsworth St.
787 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 46.12 data table
WPCL Rain Gage
6543 N Burlington Ave.
786 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 47.47 data table
Astor Elementary School Rain Gage
5601 N Yale St.
798 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 43.64 data table
Swan Island Rain Gage
1165 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 40.55 data table
North West Region
Northwest region -- average rainfall, 5 gages. 0.01 0.01 0.01 0.01 46.95  
Skyline School Rain Gage
11536 NW Skyline Blvd.
758 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 46.24 data table
Sauvie Island School Rain Gage
14445 NW Charlton Rd.
759 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 48.97 data table
Yeon Rain Gage
3395 NW Yeon St.
778 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 50.33 data table
Metro Learning Center Rain Gage
2033 NW Glisan St.
793 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 48.25 data table
Bonny Slope BSD Rain Gage
11775 NW McDaniel Rd.
1207 15-Jul-2024, 20:27 0.05 0.05 0.05 0.05 40.97 data table
North East Region
Northeast region -- average rainfall, 9 gages, not including the Irvington rain gage. 0.00 0.00 0.00 0.00 43.85  
Fernwood School Rain Gage
3255 NE Hancock St.
764 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 44.43 data table
Vernon School Rain Gage
2044 NE Killingsworth St.
768 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 44.68 data table
Airport Way #2 Rain Gage
14614 NE Airport Way
774 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 43.77 data table
Mallory Rain Gage
8030 NE Mallory Ave.
775 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 45.14 data table
Beaumont School Rain Gage
4043 NE Fremont Ave.
783 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 45.59 data table
Post Office Rain Gage
7660 NE Airport Way
785 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 42.33 data table
Leodis V. McDaniel Rain Gage
2735 NE 82nd Ave.
1190 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 43.49 data table
Forty-Second Avenue Rain Gage
NE 42nd Ave and Buffalo St.
1198 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 44.93 data table
Irvington Elementary School Rain Gage
1320 NE Brazee St.
1204 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 42.93 data table
Parkrose High School Rain Gage
12003 NE Shaver St.
1212 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 40.25 data table
South West Region
Southwest region -- average rainfall, 10 gages, not including the South Waterfront rain gage. 0.00 0.00 0.00 0.00 43.33  
Portland Fire Bureau Rain Gage
55 SW Ash St.
757 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 47.35 data table
Sylvania PCC Rain Gage
SS Bldg, 12000 SW 49th Ave.
760 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 37.84 data table
Collins View Rain Gage
(Riverdale High School)
9806 SW Boones Ferry Rd.
763 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 45.75 data table
Sylvan School Rain Gage
1849 SW 58th Ave.
788 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 35.74 data table
Eco Roof Rain Gage
SW 12th and Clay
789 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 44.85 data table
Maplewood Elementary School Rain Gage
7452 SW 52nd Ave.
792 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 40.02 data table
OPB Rain Gage
6932 SW Macadam Ave.
1191 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 47.30 data table
Ida B. Wells-Barnett High School Rain Gage
1151 SW Vermont St.
1203 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 43.15 data table
Fire Station 18 Rain Gage
8720 SW 30th Ave.
1211 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 45.33 data table
OHSU Marquam Hill Rain Gage
3310 SW U.S. Veterans Hospital Rd.
1221 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 46.02 data table
OHSU South Waterfront Rain Gage
3930 S Macadam Ave.
1222 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 38.66 data table
South East Region
Southeast region -- average rainfall, 11 gages. 0.00 0.00 0.00 0.00 44.42  
Mt. Tabor Maintenance Yard Rain Gage
6437 SE Division St.
761 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 44.66 data table
Kelly School Rain Gage
9030 SE Cooper St.
765 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 43.69 data table
Gresham Fire Dept. Rain Gage
1333 NW Eastman Pkwy.
766 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 48.07 data table
Harney Rain Gage
2033 SE Harney St.
771 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 45.29 data table
Pleasant Valley School Rain Gage
17625 SE Foster Rd.
781 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 49.50 data table
Sunnyside School Rain Gage
3421 SE Salmon St.
791 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 44.64 data table
Arleta School Rain Gage
5109 SE 66th Ave.
794 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 41.38 data table
Glencoe School Rain Gage
825 SE 51st Ave.
795 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 43.49 data table
Multnomah Rain Gage
501 SE Hawthorne Blvd.
796 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 42.97 data table
Park SE Yard Rain Gage
5669 SE 136th Ave.
1194 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 45.78 data table
Cleveland High School Rain Gage
3400 SE 26th Ave.
1205 15-Jul-2024, 20:27 0.00 0.00 0.00 0.00 39.17 data table
Other
Cottrell School Rain Gage
36225 SE Proctor Rd., Boring
782 15-Jul-2024, 20:27 0.00 0.00 0.00 0.01 54.76 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

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