Oregon Water Science Center

Data and Tools

We collect data from Oregon lakes and streams, groundwater, landscapes, and ecosystems. Here's where you can access the information we've gathered, including our Oregon Monthly Water Availability Report.

Water Data

Surface Water

Surface Water

Streamflow measurements are vital to understanding stream conditions. We monitor over 200 streams in Oregon.

Streamflow Data

Water Quality

Water Quality

Monitoring water quality is important for protecting human and ecosystem health. We monitor rivers, streams, and lakes around the state.

Water-Quality Data



The USGS monitors groundwater levels throughout much of Oregon. The data are used to determine sustainable pumping rates for irrigation and domestic supplies.

Groundwater Data
Filter Total Items: 43
Date published: February 7, 2018

Tualatin River Basin Streamflow Data

Real-time streamflow and stage data from the USGS and Oregon Water Resources Department. Includes access to custom graphs and tables, and multi-day hydrographs.

Date published: January 25, 2018

Nutrient Loadings to Pacific Coast Estuaries (2002)

These maps, charts, and tables show the amount of total nitrogen and total phosphorus delivered to Pacific Coast estuaries and the contribution from upstream sources to those loads. The results come from the USGS SPARROW models developed for the Pacific Northwest and California.

Date published: January 8, 2018

Models of the Klamath River from Link River to Keno Dam

Models of the Klamath River from Link River to Keno Dam were constructed and calibrated by the U.S. Geological Survey for calendar years 2006-09.

Date published: January 8, 2018

Computed instantaneous suspended-sediment concentration in Williamson River

Suspended-sediment concentration data from National Real-Time Water Quality (NRTWQ) website.

Date published: January 5, 2018

McKenzie River Basin Water-Quality Sites

McKenzie River Water Quality and Streamflow Monitors

Date published: January 4, 2018

Tualatin River Basin Water-Quality Sites

Map of currently active monitors in the Tualatin River Basin, Oregon.

Date published: January 4, 2018

Tualatin River Basin Water-Quality Samples

Real-time compilation of water quality samples for Tualatin River Basin from USGS National Water Information System (NWIS).

Date published: December 15, 2017

Harney Basin Data Mapper

Map viewer of groundwater sites in the Harney Basin, Oregon

Date published: December 13, 2017

Oregon Streamflow Table

Table of current streamflow conditions for 245 site(s) in Oregon.

Date published: December 12, 2017

Flood Inundation Mapper

The USGS Flood Inundation Mapping Program has two main functions: 1) partner with local communities to assist with the development and validation of flood inundation map libraries; and 2) provide online access to flood inundation maps along with real-time streamflow data, flood forecasts, and potential loss estimates. 

Date published: December 12, 2017

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.

Date published: December 12, 2017

National Water Information System (NWIS) - Oregon

National Water Information System: Mapper (Oregon)