| As of fiscal year 2005,
the National Irrigation Water Quality Program
has been inactive.
For further information regarding the program,
please "Contact Us" via the link
at the top of this page.
NIWQP Project/Study Area—
Malheur National Wildlife Refuge, Oregon
LocationMalheur National Wildlife Refuge is located in Harney Basin in southeastern Oregon and is one of the largest inland wetlands in the United States. The Refuge spans an area 40 miles long by 39 miles wide and is shaped like a lopsided "T." (Detail map pdf)
StatusDuring the reconnaissance studies, there was no evidence that irrigation drainage was causing significant harmful effects. The NIWQP is no longer involved at this location.
Phases 2 and 3 DataChemical Data From Water:
ASCII - 13 KB .dat File or Microsoft Excel - 60 KB .xls File
ASCII - 5 KB .dat File or Microsoft Excel - 32 KB .xls File
ASCII - 23 KB .dat File or Microsoft Excel - 98 KB .xls File
ASCII - 9 KB .dat File or Microsoft Excel - 39 KB .xls File
DocumentsRinella, F.A., and Schuler, C.A., 1992, Reconnaissance investigation of water quality, bottom sediment, and biota associated with irrigation drainage in the Malheur National Wildlife Refuge, Harney County, Oregon, 1988-89: U.S. Geological Survey Water-Resources Investigations Report 91-4085, 106 p.