LOCATION.--Lat 42° 58'55", long 115° 18'28"(Rev.)(NAD83), in SE1/4 sec.18, T.5 S., R.10 E., Elmore County, Hydrologic Unit 17050101, Glenns Ferry quad., at bridge on county road (Morrow Reservoir Road), and 2 mi north of Glenns Ferry.

DRAINAGE AREA.--43.3 mi², revised.

PERIOD OF RECORD.--December 1938 to September 1943 (October 1940 to September 1941, fragmentary) (discontinued). November 1909 to June 1913 (fragmentary), at site about 2 mi downstream in sec.30, just above highway bridge at Glenns Ferry.

GAGE.--Staff gage. Elevation of gage is 2,590 ft above NGVD of 1929, from topographic map. Prior to Mar. 30, 1913, staff gages at sites 2.5 mi downstream, at different datums.

REMARKS.--Diversions above station for irrigation.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge observed, 520 ft³/s Mar. 8 or 9, 1943, gage height, 5.5 ft, from floodmarks, from rating curve extended above 200 ft³/s; no flow at times.