Information and Materials: Photography, Maps and Video
DEC marine biologists collect many types of information during their studies and analyses conducted in New York State tidal wetlands. Some of this information is available to the public. Listed below are some of the photography, maps and videos that are available for viewing. Please contact the Tidal Wetland (TW) Inventory and GIS office first to make arrangements for viewing the information.
The following photography is available for viewing at DEC Bureau of Marine Resources Headquarters in East Setauket. Print copies of the photographs may be made through a vendor. Digital copies may be available at no charge, downloaded on data storage media supplied by the customer. This is an incomplete list of the photographs available at DEC. Contact the TW Inventory and GIS Office to see if there are more photographs in your area of interest.
A 1997 color aerial photograph (175 KB) in the vicinity of the Ponquogue Bridge, Shinnecock Bay, Long Island, NY (scale 1:14000), shown below, is an example of aerial photography identifying submerged aquatic vegetation (SAV).
- 1974 1:12,000 CIR All tidal wetlands south of the Tappan Zee Bridge
- 1989 1:12,000 CIR All tidal wetlands south of the Tappan Zee Bridge
- 1992 1:12,000 B&W Most of the tidal wetlands in New York City and Long Island
- 1994 1:14,000 Color of submerged aquatic vegetation and some tidal wetlands east of Jones Inlet
- 1996 1:14,000 Color of submerged aquatic vegetation and some tidal wetlands east of Jones Inlet
- 1996 1:12,000 CIR of tidal wetlands on Hudson River north of Tappan Zee Bridge
- 1997 1:14,000 Color of submerged aquatic vegetation and some tidal wetlands east of Jones Inlet
- 1997 1:14400 True color of tidal wetlands on Hudson River north of Tappan Zee Bridge
- 1997 1:12,000 B&W leaf off of tidal wetlands on Hudson River north of Tappan Zee Bridge
- 1998 1:12,000 CIR of tidal wetlands on Hudson River north of Tappan Zee Bridge
- 1998 1:12,000 CIR of tidal wetlands on Hudson River south of Tappan Zee Bridge to and including New York City (scheduled)
- 1998 1:14,000 Color of submerged aquatic vegetation and some tidal wetlands east of Jones Inlet
- 1999 1:14,000 Color of submerged aquatic vegetation and some tidal wetlands east of Jones Inlet
The New York State Department of Environmental Conservation, Division of Fish, Wildlife and Marine Resources, Bureau of Marine Resources, Geographic Information System Section (Section) is in the process of producing a tidal wetlands trend analysis using digital coverages. The study area includes New York State tidal wetlands south of the Tappan Zee Bridge from 1974 to the present. In addition the tidal wetlands north of the Tappan Zee Bridge are being mapped for the first time as tidal wetlands.
The resultant coverages do not constitute an official tidal wetlands map. The user of the coverages assumes all responsibility for any action that might result from the use of the coverages. All measurements and positions are approximate. The coverages may be used and distributed without the permission of or compensation to the Section. These coverages may be in various states of preparation and should be considered draft.
Vector coverages in ARC/INFO export files and raster coverages in ERDAS .lan or .img are available for the following:
- Shinnecock Bay
- Moriches Bay
- Quantuck and Moneybougue Bay
Coverages are being developed for the following areas:
- Napeague Bay to Montauk Point
- Great South Bay east of Fire Island Inlet
- Hudson River from the Tappan Zee Bridge to Troy
- Hudson River from the Tappan Zee Bridge to and including New York City
The coverages may include the following:
- A 1974 tidal wetlands trends edge matched vector line digitized in ARC/INFO from mylars of the Official New York State Tidal Wetlands Inventory at 1 inch equals 200 feet. These mylars were made by enlarging 1974 aerial infrared photography at 1 inch equals one thousand feet and best fitting the enlargement to New York State Department of Transportation maps at a scale of one inch equals 2000 feet. Each map, 2,000m x 2,000m is identified with a six digit New York Transfers Mercator coordinate, e.g. 600-526 (600 is 600,000 and 526 is 4,526,000). The maps were not subject to aerial triangulation. This 1974 vector coverage contains the designation 74 at or near the end of its filename. The dissolved coverages contain the designation d at or near the end of the file and contain the west coordinates and the east coordinates separated by an x, example d73x674d contains dissolved coverages from 730,000 to 760,000 for 1974. Coverages may also be named for a geographic area.
- A 1989 mosaic raster coverage produced by scanning 1989 aerial infrared photography at 1 inch equals 1000 feet at an approximate resolution of 400 dpi. The resultant rasters were rectified to the above vector and enhanced with Imagine (ERDAS) software. This 1989 raster coverage contains the designation 89 at or near the end of its filename.
- A 1989 tidal wetlands trends edge matched vector line manually digitized on screen from the above raster coverage with field verification. This 1989 vector coverages contains the designation 89 at or near the end of its filename.
- The 1974 and 1989 coverages were georeferenced to NYUTM, zone 18 (extended), spheroid Clark 1866, datum NAD27.
- As the coverages are updated a numeric will be added to the coverage after the year designation. It is hoped that major changes to coverages will be updated every five years and minor changes as needed.
- The *.lan files can be much faster to view in ARC. The *.lan files were made from the *.img files using the export function in Imagine.
- A 1998 mosaic raster coverage produced by scanning 1998 aerial infrared photography at 1 inch equals 1000 feet at an approximate resolution of 600 dpi. This 1998 raster coverage contains the designation 98 at or near the end of its filename.
You may wish to refer to our list of tidal wetlands categories that may appear within the coverages.
Oblique aerial video photography of tidal wetlands taken from a helicopter at altitudes varying from 200 feet to 500 feet area available for Long Island and Hudson River. This photography is done on a recurring basis and is continuing at present.