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Coastwide Reference Monitoring System (CRMS) 2015 land-water classifications


Publication Date


Couvillion, B.R., Beck, H.J., Dugas, J., Garber, A., and Mouton, K., 2018, Coastwide Reference Monitoring System (CRMS) 2015 land-water classifications: U.S. Geological Survey data release,


Wetland restoration efforts conducted by the Coastal Wetlands Planning, Protection and Restoration Act (CWPPRA) in Louisiana rely on monitoring efforts to determine the efficacy of these efforts. The Coastwide Reference Monitoring System (CRMS) was developed to assist in a multiple-reference approach that uses aspects of hydrogeomorphic functional assessments and probabilistic sampling for monitoring. The CRMS program includes a suite of approximately 390 sites that encompass the range of hydrological and ecological conditions for each stratum. As part of CRMS, land and water classifications are created from Digital Orthophoto Quarter Quadrangles (DOQQs) approximately every three years at all CRMS sites. A DOQQ is a raster image in [...]

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The intended use of these data are to provide information to aid efforts in the conservation, restoration, creation, and enhancement of Louisiana's coastal wetlands. The land-water data is used to measure the occurrence, locations, and rates of land loss/land gain.


Spatial Services

ScienceBase WMS


  • USGS Data Release Products
  • USGS Wetland and Aquatic Research Center



Additional Information


Type Scheme Key
DOI doi:10.5066/F7930RDX

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