Synoptic SurveysWhat are Synoptic Surveys?Synoptic surveys are comprehensive water quality surveys designed to provide a snapshot of the nutrient levels and the quality of the biological community in a specific watershed. The surveys typically collect surface water grab samples during spring baseflow at stream confluences, road crossings, or at randomly selected stations within a designated watershed. Samples are analyzed for dissolved nutrients, nitrate (NO2), nitrite (NO3), and orthophosphate (PO4), and biological indices calculated from benthic macroinvertebrate and fish samples. Nutrient concentrations and yields, and biological indices are mapped upstream of all sample sites. Watershed areas between, or upstream of sample sites, average approximately 300 hectare (700 acres). |
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The synoptic information is an effective tool used by watershed managers to identify subwatersheds or reaches within a watershed that might benefit from the implementation of best management practices, stream restoration, or protection. Sixteen synoptic surveys have been completed by the Watershed Restoration Division of DNR with support of EPA 319 funding in Maryland.
Electronic copies of synoptic survey reports for several watersheds are available from the DNR Surf Your Watershed page: /watersheds/surf/proj/wras.html For more information on DNR synoptic surveys, contact: |
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Search Maryland DNR Rivers & Streams 101 | Monitoring & Research | Restoration & Protection Return to the Maryland DNR Home Page. |
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