Surface Water Current State
The Surface Water Current State webmap (link below) displays surface water metrics based on streamflow gauges within the state of Indiana with at least 30 years of observations. Several water level metrics are available for display to represent the current state of Indiana surface water resources. These metrics include flow rate normalized by watershed area for the most recent water year as well as percentiles to convey how the most recent water year compares to the previous 29 water years at each of the sites. Descriptions of the various layers present in the webmap can be seen at the bottom of this page. Methodology can be found here.
Layers Present in Webmap
Mean Flow Rate [in] - Average runoff over the most recent (current) water year. The streamflow rates were normalized based on the drainage area of each station's corresponding watershed.
End of Year Flow Rate [in] - Runoff rate on September 30th of the most recent (current) water year. The flow rates were normalized based on the drainage area of each station's corresponding watershed.
Percentile of Mean Flow Rate - Non-exceedance probability of the mean runoff from the most recent (current) water year as compared to the previous 29 water years. [100% = greatest flow rate]
Percentile of End of Year Flow Rate - Non-exceedance probability of the end of year (September 30) runoff from the most recent (current) water year as compared to the previous 29 water years. [100% = greatest flow rate]
Percentile of Maximum Flow Rate - Non-exceedance probability of the maximum runoff rate from the most recent (current) water year as compared to the previous 29 water years. [100% = greatest flow rate]
Percentile of 7-Day Minimum Flow Rate - Non-exceedance probability of the minimum runoff rate from the most recent (current) water year as compared to the previous 29 water years. [100% = greatest flow rate]
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