Station list
05446000 ROCK CREEK AT MORRISON, IL
LOCATION.--Lat 41°47'50", long 89°58'20", in NW¼ sec.19, T.21 N.,
R.5 E., Whiteside County, Hydrologic Unit 07090005,
on right bank at upstream side of bridge on Prairie Center Road in Morrison, 0.2
mi upstream from French Creek, 7.5 mi downstream from Little Rock Creek, and at mile 15.2.
DRAINAGE AREA.--164 mi2.
PERIOD OF RECORD.--Daily discharges, March 1940 to September 1958 and October 1977 to September
1986. Annual maximums, water years 1959-71 and 1987 to current year. Published as "near Morrison"
1942-58.
REVISED RECORDS.--WSP 1308: 1940(M). WDR IL-78-1: Drainage area.
GAGE.--Crest-stage gage. Datum of gage is 606.91 ft. above sea level (levels by Illinois Department of
Transportation). October 1942 to September 1958, water-stage recorder at site near Morrison
about 3 mi upstream at datum 13.50 ft higher. Oct. 1, 1977, to Mar. 11, 1981, water-stage recorder
at site 85 ft upstream at same datum. Mar. 12 to Nov. 3, 1981, nonrecording gage at site 100 ft
downstream at same datum.