Hydro Flow Metrics Historical (Map Service)

This map service represents modeled streamflow metrics from the historical time period (1977-2006) in the United States. In addition to standard NHD attributes, the streamflow datasets include metrics on mean daily flow (annual and seasonal), flood levels associated with 1.5-year, 10-year, and 25-year floods; annual and decadal minimum weekly flows and date of minimum weekly flow, center of flow mass date; baseflow index, and average number of winter floods.�These files and additional information are available on the project� website,�<a href='https://www.fs.usda.gov/rm/boise/AWAE/projects/modeled_stream_flow_metrics.shtml' target='_blank' rel='nofollow ugc noopener noreferrer'>https://www.fs.usda.gov/rm/boise/AWAE/projects/modeled_stream_flow_metrics.shtml</a>. Streams without flow metrics (null values) were removed from this dataset to improve display speed; to see all stream lines, use an NHD flowline dataset.<div><br /></div><div>Hydro flow metrics data can be downloaded from�<a href='https://data.fs.usda.gov/geodata/edw/datasets.php?xmlKeyword=hydro+flow+metrics' target='_blank' rel='nofollow ugc noopener noreferrer'>here</a>.<br /></div>