Securing Sediment Samples at Hickey Run
The USGS wants to know where nutrient-rich sediment in the DC area is coming from.
Through its sediment fingerprinting project with the D.C. Department of Energy and Environment, the USGS is looking into the sources of the excess sediments that are found in Hickey Run and the National Arboretum.
Why It’s Important: This sediment contains important nutrients such as phosphorus and nitrogen. But too much sediment can block sunlight from aquatic plants, while excess nutrients can stimulate phytoplankton growth that use up all the oxygen in the water.
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