PROVISIONAL DATA SUBJECT TO REVISION

Station operated in cooperation with the U.S. Army Corps of Engineers.

STATION.--14361500 ROGUE RIVER AT GRANTS PASS, OR

LOCATION.--Lat 42° 25'50", long 123° 19'00", in NW 1/4 sec.20, T.36 S., R.5 W., Josephine 
    County, Hydrologic Unit 17100308, on right bank at city of Grants Pass filter plant, 
    0.6 mi upstream from bridge on State Highway 99 at Grants Pass, and at mile 101.8. 
    Prior to Sept. 3, 1983, at site 300 ft upstream. [location map] 
DRAINAGE AREA.--2,459 mi2.
PERIOD OF RECORD.--October 1938 to current year. Prior to January 1939 monthly discharge 
    only, published in WSP 1318. 
GAGE.--Water-stage recorder. Datum of gage is 884.28 ft above NGVD of 1929. Prior to 
    Aug. 8, 1957, at site 300 ft upstream at datum 4.00 ft higher and Aug. 8, 1957, to 
    Sept. 2, 1983, at site 300 ft upstream at datum 1.00 ft higher. 
REMARKS.--Flow regulated since February 1977 by Lost Creek Lake (station 14355040), 
    slight regulation by Fish Lake and Emigrant Lake. Large fluctuations at times caused 
    by Savage Rapids Dam 5.5 mi upstream from station. Many diversions from Rogue River 
    and tributaries upstream from station, the largest of which is at Savage Rapids Dam 
    of Grants Pass Irrigation District, 5.5 mi upstream from station. Continuous 
    water-quality records for the period August 1973 to September 1987 have been collected 
    at this location. U.S. Geological Survey satellite telemeter at station. 
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 152,000 ft3/s Dec. 23, 1964, gage height, 
    35.15 ft, present datum, from rating curve extended above 93,000 ft3/s; minimum discharge, 
    195 ft3/s Jan. 30, 1961; minimum daily, 606 ft3/s Sept. 10, 1968.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood in December 1861 reached a stage of about 43 ft, 
    present datum (information furnished by Corps of Engineers). Flood in February 1890 
    reached a stage of about 36 ft, present datum, and that of February 21, 1927, about 
    32 ft, present datum, according to local resident.


NOTE: The most current shifted rating for this site can be found at USGS Rating Depot website.