Integrating new coastline information and geographically coordinated coastal geomorphology data

Transcription

1 Integrating new coastline information and geographically coordinated coastal geomorphology data NOAA Contemporary Shoreline DOE Coastal Geomorphology Cynthia Miller Corbett Jeff Simley 1

2 National Hydrography Dataset Model GEODATABASE The National Map 2

3 Coastline Feature in the NHD 21 March

4 NOAA CONTEMPORARY Mean High Water U.S. Shoreline High resolution shoreline data from tide coordinated stereo imagery Generalized for 1:20,000 Scale _Alaska.dbf _GreatLakes.db WestCoast.dbf _Atlantic.dbf _Gulf.dbf 21 March

5 NHD Coastline is defined at Mean High Water Mean High Water : Diagram shows the way the United States Navy views the Littoral zone. 5

6 Example of NOAA Coastline NOAA Shoreline 108 m Difference Washington Scale 1:250,000 NHDFlowline Shoreline Scale 1:24,000 6

7 Example of NOAA Coastline Belfast, Maine NOAA Shoreline Maine Coast Scale 1:250, m Difference NHDFlowline Shoreline Seven Hundred Acre Island Scale 1:24,000 7

8 Fifty percent of the population lives along the coastlines Coastline changes have major impact on population : Diagram shows the way the United States Navy views the Littoral zone. 8

9 Geomorphology Data Source The Coastal Hazards Data Base Vulnerability to Erosion and Sea level Rise NDP 043C A Coastal Hazards Data Base for the U.S. West Coast (1997) V.M. Gornitz, T.W. Beaty, and R.C. Daniels (contributors) NDP 043A A Coastal Hazards Data Base for the U.S. East Coast (1992) V.M. Gornitz and T.W. White NDP 043B A Coastal Hazards Data Base for the U.S. Gulf Coast (1994) V.M. Gornitz and T.W. White Coastal Vulnerability Index COASTAL RISK FACTORS Geomorphology GM Geology GL Shoreline Displacement ER Tidal Range TR Wave Height WH Elevation EL Sea Level Trends SL 9

10 COASTAL GEOMORPHOLOGY CLASSIFICATION Landform Groups Beach Man Modified Landform Sub Groups (DOE National Data Packages, 1992; 1994; 1997) 10

11 Source DOE 11

12 WA OR 1111: Low Cliffs; Risk Rank is 3 to 4 21 March

13 Identifying/Confirming Geomorphology Updating as necessary Applying codes to coastline WA_ Identify Gray s Harbor, Washington barrier spit, estuary, and man modified barrier coast 13

14 Identifying/Confirming Geomorphology Nestucca River OREGON Barrier coast beach at Nestucca Spit State Park Barrier coast beach Scale 1:50,000 14

15 Identifying/Confirming Geomorphology CA_Morrow Bay: Modify lagoon designation to identify Morrow Estuary Natural Preserve Marine/fluvial (Lagoonal) Risk 3, 4 Estuary, Man modified, Risk 3, 4 Estuary, Risk 3, 4 Barrier Coast, Beach, Risk 5 Scale 1:24,000 15

16 Linear Referencing Geomorphic Features to the NHD Oregon Alluvial Plain Beach Barrier Coast Beach 21 March

17 NHD Flowline Oregon Coastal Geomorphology Relative Occurrence (Sum of Lengths) for Geomorphic Features Sum of Length Geomorphology and Associated Risk Risk *MM = Man modified 21 March

18 NHD Flowline Oregon Coastal Geomorphology California 21 March

19 Linear Referencing Geomorphic Features to the NHD CALIFORNIA Relative Occurrence (Sum of Lengths) for Geomorphic Features Low cliffs Low cliffs, Beach Low cliffs, Man modified Medium cliffs Medium cliffs, Beach Medium cliffs, Man High cliffs High cliffs, Beach High cliffs, Man Estuary Estuary, Beach Estuary, Salt marsh Estuary, Man modified Coastal Plain Beach Coastal Plain Beach, Barrier Coast Beach Barrier Coast, Spit Barrier Coast, Man Alluvial plain, Beach Alluvial plain, Man Delta Environment, Lagoonal Lagoonal, Beach Lagoonal, Lagoonal, Mixed Lagoonal, Man modified Risk Geomorphology and Associated Risk Series1 Sum of Length Series1 21 March

20 Linear Referencing Geomorphic Features to the NHD Texas Texas 21 March

21 Linear Referencing Geomorphic Features to the NHD South Padre Island, Texas Gulf of Mexico Barrier Island Complex ( 21

22 Linear Referencing Geomorphic Features to the NHD Louisiana Louisiana 21 March

23 Linear Referencing Geomorphic Features to the NHD Louisiana Geomorphology and Associated Risk Series1 Estuary, salt marsh Estuary, man modified Coastal plain Coastal plain beach Coastal plain, salt marsh Coastal plain, man Barrier island Barrier spit Barrier coast, man Delta Environment Delta Environment, Delta Environment, Delta Environment, Lagoonal Reef, Fringing Relative Occurrence (Sum of Lengths) for Geomorphic Features Series1 Sum of Length Risk 21 March

24 Linear Referencing Geomorphic Features to the NHD LOUISIANA ESTUARIES Based on NOAA s National Estuarine Research Reserve System, NHD updated with this newer information ( Barataria Bay Estuary Terrebonne/Timbalier Bay Estuary 21 March

25 Linear Referencing Geomorphic Features to the NHD Louisiana Mississippi Delta Geomorphic Features Updated by Photo Interpretation Spoil Area Corridor km/4.101 mi USTopo 2010 Imagery and Current NHD Flowline 21 March 2012 Scale: 1:150,00025

26 Linear Referencing Geomorphic Features to the NHD Blind Bay Pass A Loutre State Waterfowl Management Area NHD Coastal Flowline Apparent retreat of prodelta (1.3 km/ 0.82 mi) Scale 1:75,000 26

27 (Walker and McGraw in Bird, 2010, fig ) 21 March

28 What s Next. Gulf of Mexico Coast Complete Geomorphology feature attribute US East Coast Create Geomorphology feature attribute Alaska Coastline Evaluate NOAA Coastal Pilot Studies SHOREZONE coastal habitat mapping and classification SPOT Imagery Coastal Risk Categories Assess additional coastal parameter integration in National Hydrography Dataset geodatabase USGS Coastal and Marine Geology Change Assessments : National Assessment of Shoreline Change Project Digital Shoreline Analysis System Maintenance Collaboration to maintain accurate geomorphic attributes for the US coast Poppe, L.J., Williams, S.J., and Paskevich, V.F., eds., 2005