This feature layer is intended to be used in conjunction with the OSP Activity 420 for FEMA's CRS imagery layer. This layer represents the relevant management attributes of areas that are likely eligible for Open Space Preservation (OSP) - Activity 422a credit through the Federal Emergency Management Agency’s (FEMA) Community Rating System (CRS).  It is intended to standardize screening-level OSP data for the U.S. and enable planners and floodplain managers across the nation to participate in the CRS program at a level that was not possible in the past due to data limitations.  Ultimately, more communities participating in CRS will 1) help FEMA meet their mission to help communities prepare for, protect against, and recover from flood hazards, 2) help The Nature Conservancy meet their mission to make communities more resilient to flooding by conserving open space and restoring natural floodplain functions, and 3) make flood insurance more affordable for people both inside and outside of the regulatory floodplain. A tutorial on how to use this service can be found at Assess open space to lower flood insurance cost.Under the National Flood Insurance Program (NFIP), CRS is a voluntary program that provides flood insurance discounts to communities that take action to reduce their flood risk. The OSP activity is one of the largest point contributors and can greatly improve a CRS community’s overall score, which incentivizes nature-based solutions to reduce flood risk while also making flood insurance more affordable. The data in this image service are a modified subset of the USGS's Protected Areas Database of the United States (PAD-US). In accordance with the 2017 CRS Manual requirements Esri removed all Federally or Tribally owned or managed lands larger than 10 acres.  The National Hydrography Database (NHD) was then intersected with the remaining PADUS areas to extract all bodies of water larger than 10 acres and major rivers. The resulting vector dataset was then converted to 30 m raster and snapped to the National Land Cover Database (NCLD) Impervious Surface Estimation dataset. The final imagery layer represents the IDs of each of those PAD-US polygons.