|Walla Walla Gauge|
The water level and multi-parameter sensors were installed
at Harris Park Bridge to monitor basic physical information affecting aquatic
inhabitants of the Walla Walla basin. Of primary concern are bull trout,
which are sensitive to increases in water temperature. Temperature, dissolved
oxygen, PH and conductivity are commonly used to determine water quality
and may be used in productivity modeling. Temperature data from this site
may be used in conjunction with TMDL models(http://www.ecy.wa.gov/programs/eap/models.html).
The location of the stream gage is unique in that the area upstream from
the Harris Park Bridge is relatively un-impacted with most of the land falling
within the Umatilla National Forest, whereas downstream from the Harris
Park bridge land development increases along with water diversion. We believe
these data will serve as a baseline and will be useful to area management
agencies, local organizations, irrigation districts and the general public.
- NOTE - Effective 09/22/06 the Dissolved Oxygen, Ph, and Electrical Conductivity
sensors have been removed.
- This data is provisional.
- The relationship between stage (elevation) and discharge (cfs), i.e.
the rating curve, is currently being developed.
- These data are downloaded directly from a USFWS gauge on the South Fork
of the Walla Walla River at Harris Bridge.
- This gauge is located at: Lat N 45°50'12, Long W 118°10'5. It
is located in province: Columbia Plateau (4), subbasin: Walla Walla (4J)
and Hydrologic Unit Code (HUC 4) 17070102 - Walla Walla Vertical datum
used to calculate mean sea level for both gauges is NAVD88. The elevation
offset is 1974.218.
- The data on the graph is posted in 3-hour increments, for visual clarity.
- Occasionally, these gauges will experience technical difficulties which
may result in missing data. Please be assured this is generally
the problem if records are missing and the FPC is aware of the problem
and will update the files as soon as the stations are operational. Don't
hesitate to contact FPC
data staff if you have any questions or concerns.
Page last updated on:
February 10, 2012
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