LOCATION.--Lat 43° 10'50", long 111° 06'55" (NAD27), in SW1/4 sec.6, T.3 S., R.46 E., Boise meridian, Bonneville County, Alpine (ID,WY) quad., Hydrologic Unit 17040104, on left bank 1.5 mi upstream from mouth, and 5 mi west of Alpine.

DRAINAGE AREA.--108 mi². Mean elevation, 6,960 ft.

PERIOD OF RECORD.--July to September 1917, June to September 1918, May to July 1934 (monthly summaries only, in WSP 1317), September 1953 to September 1961 (discontinued). Monthly discharge only for some periods, published in WSP 1317. Published as McCoy Creek near Alpine, Idaho, 1917-18, and as McCoy Creek near Alpine, Wyoming, 1934.

REVISED RECORDS.--WSP 1317: 1917(M), 1918(M), 1934.

GAGE.--Water-stage recorder. Datum of gage is 5,635.4 ft above NGVD of 1929, supplementary adjustment of 1947, levels partly by Bureau of Reclamation. July 15 to Sept. 30, 1917, staff gage, June 25 to Sept. 30, 1918, water-stage recorder, and May 1 to July 31, 1934, staff gage, at sites about 1 mi downstream at different datum.

REMARKS.--No diversions above station.

COOPERATION.--U.S. Bureau of Reclamation.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,130 ft³/s Apr. 21, 1956, gage height, 5.72 ft; minimum, 1 ft³/s for many days in 1934.

EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum discharge, 1,670 ft³/s May 10, 1974, gage height, 7.06 ft.