Statistical summaries of streamflow data for selected gaging stations on and near the Idaho National Engineering Laboratory, Idaho, through September 1990

Statistical summaries and graphs of streamflow data were prepared for 13
gaging stations with 5 or more years of continuous record on and near the Idaho
National Engineering Laboratory. Statistical summaries of streamflow data for
the Big and Little Lost Rivers and Birch Creek were analyzed as a requisite for a
comprehensive evaluation of the potential for flooding of facilities at the Idaho
National Engineering Laboratory.

The type of statistical analyses performed depended on the length of
streamflow record for a gaging station. Streamflow statistics generated for
stations with 5 to 9 years of record were: (1) magnitudes of monthly and annual
flows; (2) duration of daily mean flows; and (3) maximum, median, and
minimum daily mean flows. Streamflow statistics generated for stations with 10
or more years of record were: (1) magnitudes of monthly and annual flows;
(2) magnitudes and frequencies of daily low, high, instantaneous peak (flood
frequency), and annual mean flows; (3) duration of daily mean flows;
(4) exceedance probabilities of annual low, high, instantaneous peak, and mean
annual flows; (5) maximum, median, and minimum daily mean flows; and
(6) annual mean and mean annual flows.