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LOCATION.--Lat 42° 47'28", long 118° 52'00", in NW1/4 NW1/4 sec.20,
T.32 S., R.32-1/2 E., Harney County, Hydrologic Unit 17120003, Bureau of
Land Management land, on left bank 1.5 mi upstream from upper diversion
for Malheur National Wildlife Refuge, 2.0 mi downstream from Fish Creek,
and 3.5 mi southeast of Frenchglen, Oregon.
DRAINAGE AREA.--200 mi2, approximately.
PERIOD OF RECORD.--March 1911 to September 1913, March 1914 to September 1916,
April 1917 to September 1921, August to November 1929, April to September 1930,
December 1937 to current year. Monthly discharge only for some periods,
published in WSP 1314. Published as "near Diamond" 1911-21. Records of
discharge for January 1909 to September 1910 (published in WSP 270, 290
and 370, for a nonequivalent site as "near Diamond") have been found to
be unreliable and should not be used.
REVISED RECORDS.--WSP 330: Drainage area (former site). WSP 860: Drainage area
(present site). WSP 1564: 1938-39(M), 1948(M), 1951(M), 1952-53. WSP 1714:
Drainage area. See also PERIOD OF RECORD.
GAGE.--Concrete control. Datum of gage is 4,254 ft above NGVD of 1929
(levels by Fish and Wildlife Service). Prior to December 1937, nonrecording
gage at several sites within 2 mi downstream at different datums.
Dec. 6, 1937 to Feb. 14, 1938, nonrecording gage at present site and datum.
REMARKS.--No regulation or diversion upstream from station.
AVERAGE DISCHARGE.--72 years (water years 1912-13, 1915-16, 1918-21,
1939-2002), 127 ft3/s, 91,790 acre-ft/yr.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 4,270 ft3/s Apr. 26, 1978,
gage height, 7.15 ft, from floodmarks, from rating curve extended above
1,900 ft3/s on basis of slope-area measurement of peak flow;
minimum discharge, 4.2 ft3/s Dec. 9, 1972, result of freezeup.
Station operated in cooperation with U.S. Fish and Wildlife Service.
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