Maryland Coast Smart - Climate Ready Action Boundary (CRAB) Flood Depth Grid: Maryland

Description:

Esri ArcGIS Online (AGOL) Imagery Layer for accessing the Maryland Coast Smart - Climate Ready Action Boundary (CRAB) data product.The Maryland Coast Smart - Climate Ready Action Boundary (CRAB) Flood Depth Grid raster layer was created using a GIS spatial analysis model, unique for each county in the State of Maryland. Coastal counties follow an analysis methodology that incorporates FEMA Stillwater wave action as it is understood from the FEMA identified VE zones. A Water Surface Elevation (WSE) and Still Water Elevation (SWEL) rasters are used as the baseline to identify existing water depths within each county. For all flood zones that are not classified as VE the WSE three feet was added to reflect a three-foot rise in the base flood elevations. For those WSEs falling within a FEMA floodplain identified V Zone, six feet was added (three feet for the increase in flood elevations for the CS-CRAB, and 3 feet to compensate for the minimum of 3 foot wave action typically mapped by FEMA) / wave heights greater than 3 feet were reduced to the 3 foot minimum for consistency across the shoreline. The newly calculated WSE plus three datasets were then converted to points and merged. Next, an Inverse Distance Weighted (IDW) Interpolation was used to compute the proportional weighted values between the WSE point locations based on proximity. The DEM for each county is then subtracted from the new IDW raster in order to show precise water locations as they relate to the land elevation, producing a freeboard depth grid representing the depth of flood waters above the existing ground elevation given a 3 foot increase in water level. A course resolution QAQC was applied to remove "islands" of data associated with DEM inaccuracies and other elevation anomalies.The analysis was run at a 1 ft x 1 ft raster resolution. The DEM accuracy for each county varies based what is currently available. Here the breakdown of DEM accuracy for each county used in this project: Anne Arundel County DEM year is 2017 and horizontal resolution is 1ft. Baltimore County DEM year is 2015 and horizontal resolution is 2.5ft. Baltimore City DEM year is 2015 and horizontal resolution is 0.7m. Calvert County DEM year is 2017 and horizontal resolution is 1ft. Caroline County DEM year is 2013 and horizontal resolution is 3.125ft. Cecil county DEM year is 2013 and horizontal resolution is 0.6m. Charles County DEM year is 2014 and horizontal resolution is 0.9m. Dorchester County DEM year is 2013 and horizontal resolution is 0.9m. Harford County DEM is 2013 and horizontal accuracy is 1.5m. Kent County DEM year is 2015 and horizontal resolution is 0.7m. Prince George's County DEM year is 2014 and horizontal resolution is 0.7m. Queen Anne's County DEM year is 2013 and horizontal resolution is 0.6m. Somerset County DEM year is 2012 and horizontal accuracy is 1m. St Mary's County DEM year is 2014 and Horizontal accuracy is 0.9m. Talbot County DEM year is 2015 and Horizontal accuracy is 0.7m. Wicomico County DEM year is 2012 and horizontal accuracy is 1m. Worchester County DEM year is 2011 and horizontal accuracy is 1m.The Maryland Coast Smart - Climate Ready Action Boundary (CRAB)data was created by the Maryland Environmental Service (MES) in partnership with the Maryland Department of Environment (MDE) and the Coast Smart Council, under the guidance of the Maryland Department of Natural Resource (DNR).For additional information,contactMDOT SHA OIT Enterprise Information Services:Email:GIS@mdot.maryland.gov

Creator:

ArcGIS Online for Maryland

Provider:

Maryland iMap

Resource Class:

Imagery

Subject:

State government records

Theme:

Imagery

Temporal Coverage:

2021

Date Issued:

2021-01-08

Place:

Martin's Additions, Maryland, Edmonston, Maryland, Madison, Maryland, Edesville, Maryland, Howard County, Maryland, Ocean City, Maryland, Naval Academy, Maryland, Cloverly, Maryland, Accokeek, Maryland, Brooklyn Park, Maryland, Garrison, Maryland, Redland, Maryland, Peppermill Village, Maryland, Chester, Maryland, Brown Station, Maryland, Deale, Maryland, Takoma Park, Maryland, Severna Park, Maryland, Seat Pleasant, Maryland, Landover Hills, Maryland, Church Creek, Maryland, Mardela Springs, Maryland, Fairmount Heights, Maryland, Riverside, Maryland, Marydel, Maryland, Still Pond, Maryland, Choptank, Maryland, Severn, Maryland, Prince George's County, Maryland, University Park, Maryland, Fort Washington, Maryland, Forest Glen, Maryland, Highland, Maryland, Rock Point, Maryland, Bensville, Maryland, Brandywine, Maryland, Potomac, Maryland, Vienna, Maryland, West Ocean City, Maryland, Springdale, Maryland, Mount Rainier, Maryland, Camp Springs, Maryland, Federalsburg, Maryland, Trappe, Maryland, Oxon Hill, Maryland, Capitol Heights, Maryland, Riva, Maryland, Leonardtown, Maryland, Highland Beach, Maryland, Charlestown, Maryland, Overlea, Maryland, Upper Marlboro, Maryland, Towson, Maryland, White Oak, Maryland, Glen Echo, Maryland, Butlertown, Maryland, West Denton, Maryland, Frenchtown-rumbly, Maryland, Potomac Heights, Maryland, Walker Mill, Maryland, East New Market, Maryland, Galesville, Maryland, Marlow Heights, Maryland, Henderson, Maryland, Centreville, Maryland, Mays Chapel, Maryland, Lake Shore, Maryland, Somerset County, Maryland, Four Corners, Maryland, Derwood, Maryland, Elliott, Maryland, Tall Timbers, Maryland, Somerset, Maryland, National Harbor, Maryland, Adelphi, Maryland, Edgemere, Maryland, Chestertown, Maryland, Temple Hills, Maryland, Fulton, Maryland, Galena, Maryland, Princess Anne, Maryland, Leisure World, Maryland, Algonquin, Maryland, New Carrollton, Maryland, Kingsville, Maryland, North Potomac, Maryland, Cordova, Maryland, Owings Mills, Maryland, Lisbon, Maryland, Columbia, Maryland, Maryland Park, Maryland, Taylors Island, Maryland, Melwood, Maryland, Easton, Maryland, Charles County, Maryland, Glenmont, Maryland, Anne Arundel County, Maryland, Charlotte Hall, Maryland, Olney, Maryland, Fruitland, Maryland, Milford Mill, Maryland, Joppatowne, Maryland, Mount Airy, Maryland, Fairmount, Maryland, Grasonville, Maryland, Benedict, Maryland, Woodlawn, Maryland, Dames Quarter, Maryland, Oxford, Maryland, Tolchester, Maryland, Silver Spring, Maryland, Betterton, Maryland, Indian Head, Maryland, Riverdale Park, Maryland, Bryantown, Maryland, Delmar, Maryland, Essex, Maryland, Owings, Maryland, Kingstown, Maryland, South Kensington, Maryland, Pikesville, Maryland, North Brentwood, Maryland, Annapolis, Maryland, Brookmont, Maryland, Hillandale, Maryland, Chevy Chase Village, Maryland, Hurlock, Maryland, Burnt Mills, Maryland, Williston, Maryland, Sharptown, Maryland, Elkridge, Maryland, Jesterville, Maryland, Aberdeen Proving Ground, Maryland, Seabrook, Maryland, Arden On The Severn, Maryland, Lutherville, Maryland, Lanham, Maryland, Kensington, Maryland, Colmar Manor, Maryland, Croom, Maryland, Bel Air, Maryland, Union Bridge, Maryland, Spencerville, Maryland, Silver Hill, Maryland, West Pocomoke, Maryland, Edgewater, Maryland, Langley Park, Maryland, Cedar Heights, Maryland, Eldersburg, Maryland, Crisfield, Maryland, Barclay, Maryland, Smith Island, Maryland, Coral Hills, Maryland, Piney Point, Maryland, Bivalve, Maryland, Baden, Maryland, Talbot County, Maryland, Hillcrest Heights, Maryland, Worcester County, Maryland, Herald Harbor, Maryland, Layhill, Maryland, Kettering, Maryland, California, Maryland, Calvert County, Maryland, Friendship, Maryland, Kemp Mill, Maryland, Andrews Afb, Maryland, Arbutus, Maryland, Brentwood, Maryland, Brock Hall, Maryland, Chevy Chase, Maryland, College Park, Maryland, Fallston, Maryland, Tyaskin, Maryland, Callaway, Maryland, Honeygo, Maryland, Ridgely, Maryland, Drum Point, Maryland, Scaggsville, Maryland, Frederick County, Maryland, Berlin, Maryland, Aberdeen, Maryland, Riviera Beach, Maryland, Cabin John, Maryland, Crownsville, Maryland, Greenbelt, Maryland, Marlton, Maryland, Bethesda, Maryland, Newark, Maryland, Ashton-sandy Spring, Maryland, Pocomoke City, Maryland, Abingdon, Maryland, Jessup, Maryland, Randallstown, Maryland, Mayo, Maryland, Aquasco, Maryland, Salisbury, Maryland, Lusby, Maryland, Church Hill, Maryland, Cockeysville, Maryland, Dundalk, Maryland, Cecilton, Maryland, Perryville, Maryland, Kennedyville, Maryland, North Beach, Maryland, Cottage City, Maryland, Mitchellville, Maryland, District Heights, Maryland, Morningside, Maryland, Georgetown, Maryland, Cambridge, Maryland, Baltimore County, Maryland, Edgewood, Maryland, Largo, Maryland, Suitland, Maryland, Port Tobacco Village, Maryland, Willards, Maryland, Chevy Chase Section Five, Maryland, Mount Vernon, Maryland, Mechanicsville, Maryland, Bel Air North, Maryland, Solomons, Maryland, Dunkirk, Maryland, St. Leonard, Maryland, Allegany County, Maryland, North Chevy Chase, Maryland, Catonsville, Maryland, Waterview, Maryland, Rosaryville, Maryland, North Kensington, Maryland, Eldorado, Maryland, Kent County, Maryland, Glassmanor, Maryland, Ellicott City, Maryland, Fairwood, Maryland, Dorchester County, Maryland, Fairland, Maryland, Carney, Maryland, Arnold, Maryland, Lexington Park, Maryland, Lochearn, Maryland, Konterra, Maryland, Pomfret, Maryland, Calvert Beach, Maryland, Garrett Park, Maryland, Middle River, Maryland, East Riverdale, Maryland, Harford County, Maryland, Cape St. Claire, Maryland, Laytonsville, Maryland, Stockton, Maryland, Greensboro, Maryland, Millington, Maryland, Fairlee, Maryland, Rosedale, Maryland, Chesapeake Landing, Maryland, Hillsboro, Maryland, Pittsville, Maryland, Queenstown, Maryland, La Plata, Maryland, Wicomico County, Maryland, Friendly, Maryland, Lake Arbor, Maryland, Odenton, Maryland, Huntingtown, Maryland, Pleasant Hills, Maryland, Beltsville, Maryland, Queensland, Maryland, Cobb Island, Maryland, Hebron, Maryland, Pasadena, Maryland, Ferndale, Maryland, Rossville, Maryland, Parole, Maryland, Parsonsburg, Maryland, Friendship Heights Village, Maryland, Gaithersburg, Maryland, Glen Burnie, Maryland, Eagle Harbor, Maryland, Crofton, Maryland, Havre De Grace, Maryland, Nanticoke Acres, Maryland, Damascus, Maryland, Westphalia, Maryland, Rock Hall, Maryland, Savage, Maryland, Rockville, Maryland, Wheaton, Maryland, Wildewood, Maryland, Brookeville, Maryland, Girdletree, Maryland, Baltimore, Maryland, Woodmore, Maryland, Ilchester, Maryland, Allen, Maryland, Washington Grove, Maryland, St. George Island, Maryland, Berwyn Heights, Maryland, Fort Meade, Maryland, Cedarville, Maryland, Maryland City, Maryland, St. Michaels, Maryland, Hampton, Maryland, Chillum, Maryland, Bryans Road, Maryland, Carroll County, Maryland, Chesapeake City, Maryland, Templeville, Maryland, Galestown, Maryland, West Laurel, Maryland, Landover, Maryland, Timonium, Maryland, Fishing Creek, Maryland, Sykesville, Maryland, Burtonsville, Maryland, Deal Island, Maryland, Montgomery County, Maryland, Queen Anne, Maryland, Hughesville, Maryland, Tilghman Island, Maryland, Kent Narrows, Maryland, Stevensville, Maryland, Broomes Island, Maryland, Whitehaven, Maryland, Golden Beach, Maryland, South Laurel, Maryland, Aspen Hill, Maryland, Romancoke, Maryland, White Marsh, Maryland, Summerfield, Maryland, Hyattsville, Maryland, Ocean Pines, Maryland, Quantico, Maryland, Lansdowne, Maryland, Glenn Dale, Maryland, Baltimore City County, Maryland, Marlboro Village, Maryland, Cecil County, Maryland, Glenarden, Maryland, Brookview, Maryland, Perryman, Maryland, Nanticoke, Maryland, Caroline County, Maryland, Cheverly, Maryland, Parkville, Maryland, Sudlersville, Maryland, Forestville, Maryland, Long Beach, Maryland, Perry Hall, Maryland, Annapolis Neck, Maryland, Reisterstown, Maryland, Queen Anne's County, Maryland, Denton, Maryland, Bel Air South, Maryland, Linthicum, Maryland, Waldorf, Maryland, New Windsor, Maryland, Bowleys Quarters, Maryland, Bladensburg, Maryland, Chesapeake Beach, Maryland, Calverton, Maryland, Prince Frederick, Maryland, Shady Side, Maryland, Snow Hill, Maryland, Bowie, Maryland, Crumpton, Maryland, Laurel, Maryland, North Laurel, Maryland, Chesapeake Ranch Estates, Maryland, Flower Hill, Maryland, Whaleyville, Maryland, Bishopville, Maryland, Colesville, Maryland, North Bethesda, Maryland, Powellville, Maryland, Chevy Chase View, Maryland, Secretary, Maryland, Montgomery Village, Maryland, Forest Heights, Maryland, Preston, Maryland, Chance, Maryland, St. Mary's County, Maryland, Marlboro Meadows, Maryland, Worton, Maryland, Goldsboro, Maryland, Eden, Maryland, Baltimore Highlands, Maryland, Clinton, Maryland, Gambrills, Maryland, Chevy Chase Section Three, Maryland, Maryland

Access Rights:

Public

Format:

Imagery

Language:

English