HJA newt logo HJ Andrews
Login Donate
visit HJA Andrews on Twitter visit HJA Andrews on Facebook HJA RSS news feed


Stream discharge in gaged watersheds at the Andrews Experimental Forest, 1949 to present

  • PI: Sherri L. Johnson
  • Originator: Jack S. Rothacher
  • Other researchers: Julia A. Jones, Jeffrey J. McDonnell
  • Dates of data collection: Oct 1 1949 - Oct 1 2016
  • Data collection status: Study continues and further data collection is planned
  • Data access: Online
  • Last update: Dec 28 2016 (Version 28)

    <Citation>      <Acknowledgement>      <Disclaimer>

Streamflow from selected small watersheds has been continuously monitored at the Andrews Forest beginning in November 1952 and the Lookout Creek Gauging Station has been maintained by the USGS since October, 1949. The objectives of this study include: (1) to evaluate long-term changes in hydrology associated with various management treatments, notably clearcut logging, selective logging, and burning; (2) to provide baseline data for affiliated precipitation and stream water chemistry and sediment transport studies; and (3) to characterize the hydrologic regime of old-growth forests at different elevations. Streamflow records from small watersheds began in November 1952 at WS 1,2, and 3 (60 to 100 ha), 1963 at WS 6, 7, and 8 (15 to 22 ha) 1968 at WS 9 and 10 (9 and 10 ha), 1980 at Mack Creek (580 ha), and 1950 at Lookout Creek (2440 ha).

Raw instantaneous streamflow data in cubic feet per second (cfs) and mean flow at fine temporal intervals are available. Rating curves for fixed trapezoidal flumes are maintained for all small watersheds except Lookout Creek and allow calculation of mean and total flow. The USGS-maintained Lookout Creek relies on annual rating table development to reflect changes in the open channel for instantaneous flow calculation. Entity 1 includes a reconstructed history of USGS Lookout Creek hourly data beginning in 1950 and more recently 30 and 15 minute interval data. Calculated mean cfs and total flow for each watershed are available at daily (Entity 2), monthly (Entity 3), annual (Entity 4), and stream sampling (Entity 6) time intervals. An interactive program, FLOW (Entity 5), allows the user to download instantaneous, mean and total flow at requested time periods (e.g., 15 minute, hourly) for all watersheds except for Lookout Creek.

Study Description Study Site Map Download Study Location Information: (CSV)
Download Full Documentation: (PDF) (EML)
1 Corrected instantaneous stage height with flow calculations (Oct 1 1949 - Oct 1 2016) METADATA DATA
Only Lookout Creek streamflow data is available here. Please use Entity 5 (the interactive FLOW program) to download high temporal resolution streamflow data for all other Andrews small watersheds. Lookout Creek data available here: 1) Hourly data has been reconstructed from USGS and USFS streamflow charts and punch tapes (1950-1986), 2) USGS 30 minute data (1986-2010), and 3) USGS 15 minute data (2010-present).
2 Daily streamflow summaries (Oct 1 1949 - Oct 1 2016) METADATA DATA
Daily data can also be interactively viewed, downloaded, and graphically displayed using ClimDB/HydroDB.
3 Monthly streamflow summaries (Oct 1 1949 - Oct 1 2016) METADATA DATA
Monthly data can also be interactively viewed, downloaded, and graphically displayed using ClimDB/HydroDB.
4 Annual streamflow summaries by wateryear (October 1 - September 30) (Oct 1 1949 - Oct 1 2016) METADATA DATA
Annual data can also be interactively viewed, downloaded, and graphically displayed using ClimDB/HydroDB.
5 Instantaneous and total discharge for requested time intervals (Oct 1 1953 - Oct 1 2016) METADATA DATA
This is the interactive FLOW program which allows downloads of all Andrews small watersheds for any time period at user-specified time intervals. Rating equations can also be displayed.
6 Flow summaries for sediment and nutrient sampling periods (Oct 1 1968 - Oct 1 2016) METADATA DATA
Total flow is summarized, generally in 3 week periods, for inclusion with stream sampling data in CF002.

  Calculation of streamflow inches per day (or time interval) over the watershed area - The general equation to calculate streamflow in inches per day (or per any time interval) is presented, as well as the areas of HJ Andrews watersheds required in this equation.
  Watershed Descriptions - Describes watershed characteristics including location, geology, soils, hydrology, vegetation, climate, and history.
  Rating curve summary - A summary of streamflow calculation and rating curves for small gauged watersheds in the Andrews Experimental Forest
  Rating curve equations - Rating curve equation sets and versions with constant values and maximum stage height provided for each equation
  Flow calculation using rating curves - A description of the calculus algorithm
  Andrews flume descriptions - A history and description of small watershed flumes at the Andrews
  Streamflow measurement - A history and description of streamflow measurement methods and instrumentation
  Rating curve graphs - Graphs from sample calibration points
  HJA Data Portal - Provisional real-time data from climate and hydrology stations on the Andrews Experimental Forest
  Andrews Forest Climate and Hydrology Data - Provisional real-time data graphs and other data products

 Stream chemistry concentrations and fluxes using proportional sampling in the Andrews Experimental Forest, 1968 to present (CF002)
 Meteorological data from benchmark stations at the Andrews Experimental Forest, 1957 to present (MS001)

 McGuire, Kevin J. 2004, Water residence time and runoff generation in the western Cascades of Oregon (Pub. 3864)
 Jones, J. A. 2000, Hydrologic processes and peak discharge response to forest removal, regrowth, and roads in 10 small experimental basins, western Cascades, Oregon (Pub. 2567)
 Jones, J. A., Grant, G. E. 1996, Peak flow responses to clear-cutting and roads in small and large basins, western Cascades, Oregon (Pub. 1529)
 Harr, R. Dennis 1986, Effects of clearcutting on rain-on-snow runoff in western Oregon: a new look at old studies (Pub. 681)
 Harr, R. Dennis, Levno, Al, Mersereau, Roswell 1982, Streamflow changes after logging 130-year-old Douglas-fir in two small watersheds (Pub. 625)
 Harr, R. D. 1981, Some characteristics and consequences of snowmelt during rainfall in western Oregon (Pub. 605)
 Harr, R. Dennis, McCorison, F. Michael 1979, Initial effects of clearcut logging on size and timing of peak flows in a small watershed in western Oregon (Pub. 546)
 Rothacher, Jack 1973, Does harvest in west slope Douglas-fir increase peak flow in small forest streams? (Pub. 438)
 Rothacher, Jack, Dyrness, C. T., Fredriksen, Richard L. 1967, Hydrologic and related characteristics of three small watersheds in the Oregon Cascades (Pub. 344)
 Rothacher, Jack 1965, Streamflow from small watersheds on the western slope of the Cascade Range of Oregon (Pub. 320)
 Jones, Julia A., Post, David A. 2004, Seasonal and successional streamflow response to forest cutting and regrowth in the northwest and eastern United States (Pub. 2787)
 Bond, Barbara J., Jones, Julia A., Moore, Georgianne, Phillips, Nathan, Post, David , McDonnell, Jeffrey J. 2002, The zone of vegetation influence on baseflow revealed by diel patterns of streamflow and vegetation water use in a headwater basin (Pub. 3092)
 Post, David A., Jones, Julia A. 2001, Hydrologic regimes of forested, mountainous, headwater basins in New Hampshire, North Carolina, Oregon, and Puerto Rico (Pub. 2786)
 Perkins, Reed M. 1997, Climatic and physiographic controls on peakflow generation in the western Cascades, Oregon (Pub. 2469)
 Hicks, Brendan J., Beschta, Robert L., Harr, R. Dennis 1991, Long-term changes in streamflow following logging in western Oregon and associated fisheries implications (Pub. 1239)