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Optimal hydrograph separation (OHS) is a two-component, hydrograph separation method that uses a two-parameter, recursive digital filter (RDF) constrained via chemical mass balance to estimate the base flow contribution to a stream or river (Rimmer and Hartman, 2014; Raffensperger et al., 2017). A recursive digital filter distinguishes between high-frequency and low-frequency discharge data within a hydrograph, where high-frequency data corresponds to quick flow or storms and low-frequency data corresponds to base flow. The two parameters within the RDF are alpha and beta, both are unitless. Alpha is defined as the recession constant and typically found through recession analysis. For the purposes of this data release...
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Tags: National Hydrologic Model,
Precipitation Runoff Modeling System,
USGS Science Data Catalog (SDC),
Water Quality,
Water Resources, All tags...
base flow,
conterminous U.S.,
geoscientificInformation,
hydrograph separation,
optimal hydrograph separation, Fewer tags
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