thumbnail

Use of the STORM model for estimating the quantity and quality of runoff from the metropolitan area of Houston, Texas

Water-Resources Investigations Report 79-74

By:
, , and

Links

Abstract

The ' STORM ' model (storage, treatment, overflow, and runoff model), developed by the U.S. Army Corps of Engineers, was selected from existing models and adapted to use available data to compute runoff from the Houston, TX, area and to compute the loads and concentrations of biochemical-oxygen demand, dissolved solids, total phosphorus, total organic carbon, total nitrogen, and fecal-coliform bacteria. Discharge and precipitation data for the 1975 water year and all available water-quality analyses were used to calibrate the model. Data for the 1974 water year were used to verify the model for discharge. After verification, the calibrations were adjusted to balance the difference between the 1974 and 1975 error predictions for discharge. The adjusted model was used with records of precipitation and evaporation to simulate a 20-year record of the quantity and quality of runoff from the modeled area. The percentage of difference for the 1975 water year between the observed and computed concentrations of the water-quality constituents ranged from -21 to +8 percent for dissolved solids, -56 to +31 percent for total organic carbon, 0 to +83 percent for biochemical-oxygen demand, -13 to +50 percent for total nitrogen, -40 to +133 percent for total phosphorus, and -33 to +140 percent for fecal-coliform bacteria. The percentage of difference between the observed and computed discharge for the 1975 water year ranged from -9 to +5 percent. (USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Use of the STORM model for estimating the quantity and quality of runoff from the metropolitan area of Houston, Texas
Series title:
Water-Resources Investigations Report
Series number:
79-74
Edition:
-
Year Published:
1979
Language:
ENGLISH
Publisher:
U.S. Geological Survey, Water Resources Division,
Description:
iv, 29 leaves :ill. (some fold.), maps ;27 cm.