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ICE EFFECTS ON STREAMFLOW - During winter, ice formation may cause
stage and discharge values to appear higher than expected. Ice effects
may be minor (occurring only at night and early morning) with baseline
flows obvious, or the effects may be major (stage constantly increases
over several days or weeks) resulting in greatly erroneous discharge.
Streamgages experiencing minor ice conditions will continue to display
stage and discharge values to enable users to estimate the approximate
base-line stage and discharge. Streamgages experiencing major ice
conditions will have the discharge record temporarily disabled to
prevent use of erroneous discharge values. The discharge record will
resume when it is determined that ice conditions are no longer present.
Daily mean discharges during periods of ice effect will be estimated
after detailed data analysis.
