2023 Early Hearing Detection & Intervention Conference

March 5-7, 2023 • Cincinnati, OH

5/24/2018 | 3:00 PM - 3:15 PM | QUANTIFYING FLOODPLAIN ECOSYSTEM SERVICES | 321

QUANTIFYING FLOODPLAIN ECOSYSTEM SERVICES

Retention of sediments and nutrients in floodplain areas provides critical ecosystem services to downstream communities. Lidar mapping, field data collection, and modeling were integrated to quantify the ecosystem service of sediment and nutrient retention that floodplains provide in the Delaware River watershed. The mapping component of this project resulted in the development of the Floodplain and Channel Evaluation Toolkit (FACET) to identify features and calculate key metrics describing channel and floodplain geometry from high-resolution bare-earth elevation data in the Delaware River watershed. Field data collection employed dendrogeomorphic techniques to estimate rates of stream bank erosion and floodplain sediment deposition at fifteen sites in the watershed. These two datasets were combined to develop predictive models estimating sediment trapping and export for each stream reach within the non-tidal portion of the Delaware River watershed. This assessment of floodplain net sediment flux and associated ecosystem services will help identify areas for targeted management to maintain areas with high ecosystem service values, and to restore areas that could provide the most ecosystem service benefits.

Aquatic-terrestrial Linkage
Nutrients
Sediment

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Presenters/Authors

Kristina Hopkins (), U.S. Geological Survey, khopkins@usgs.gov;