--03028500 CLARION RIVER AT JOHNSONBURG,
--Lat 41`29'10", long
78`40'43", Elk County, Hydrologic Unit 05010005, on left bank
at downstream side of highway bridge at Johnsonburg, 0.1 mi downstream
from Johnson Run, and 0.4 mi downstream from confluence of East and
PERIOD OF RECORD.
--October 1945 to current year.
--Water-stage recorder. Datum of gage is 1,423.03
ft above sea level. Prior to Nov. 8, 1951, nonrecording gage at same
site and datum.
--Flow regulated since June 1952 by East
Branch Clarion River Lake 7.9 mi upstream and at low flow by industrial
plants above station. U.S. Army Corps of Engineers satellite telemeter
at station. Daily discharge not available.
EXTREMES OUTSIDE PERIOD OF RECORD.
|The 15-minute precipitation data for this station are
temporary and will only be displayed for 120 days. Time series
of 1-hour or cumulative daily values will NOT be available for
retrieval following the 120-day display period. Although the
instrumentation is calibrated at least once a year, the temporary
classification means that documented routine inspections and other
quality assurance measures are not performed that would make the
data acceptable for archival, retrieval, or future use in general
scientific or interpretive studies.
--Flood in July 1942
reached a stage of 16.7 ft, from floodmark.
GAGE HEIGHTS OF IMPORTANCE.-
Supplied by NWS:
Action stage-5 ft; Flood stage-7 ft;
Moderate flood stage-9 ft; Major flood stage-10 ft.
--Funding for the operation of this
station is provided by the U.S. Army Corps of Engineers, Pittsburgh