About the NJGIN 1970/1977 imagery

Boyd

Administrator
Site Administrator
Jul 31, 2004
7,715
Ben's Branch, Stephen Creek
Bob and I have been discussing this, but I thought it would be of general interest. These two maps are quite different from the other NJGIN maps since they only cover selected areas, and the "wetlands" title is misleading. But if you look at the map metadata, you'll see that they were created for a very specific purpose.

Here's the 1970 metadata and a selected quote that helps explain what they were created for

https://www.arcgis.com/sharing/rest...adata/metadata.xml?format=default&output=html

"This set of photo-basemaps was originally produced to support the "Wetlands Act of 1970 ", (N.J.S.A. 13:9A-1, ET. SEQ). Although identified as the 1970 Wetlands Basemaps, the aerial photographs used to generate the basemaps were actually taken in several years; 1971, 1972, and 1977."

"These basemaps include the original delineations of the wetlands species vegetation used to map the tidal wetlands for the act. Also included is the delineation of the Upper Wetlands Boundary (UWB)."



And here is the 1977 metadata and a quote

https://www.arcgis.com/sharing/rest...adata/metadata.xml?format=default&output=html

The photo-basemaps were originally produced to support the "Tidelands Act" (N.J.S.A. 12:3). The original basemaps were mylar photo-images at a scale of 1:2400 (1 inch = 200 feet), and were the base on which the state's riparian land holdings were mapped. For the purposes of the act, riparian lands are defined as all areas that are now or formerly flowed at mean high tide by a natural waterway. [ . . . . ] Although identified as the 1977 Tidelands Basemaps, the aerial photographs used to generate the basemaps were actually taken over the course of two years, 1977 and 1978.

So, the bottom line is that the 1970 imagery is called "wetlands" because it was produced to support the "Wetlands Act of 1970" and the 1977 imagery is called "tidelands" because it supports the "Tidelands Act". Also note that the so-called 1970 imagery was actually shot in 1971, 1972 and 1977.
 
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bobpbx

Piney
Staff member
Oct 25, 2002
12,075
Pines; Bamber area
Confusing trying to read both meta file explanations. Can't make sense of it all, so just leave 'em be. It seems very likely they may be used to support policy. Since I would only use them for exploring and plant hunting, they are fine as named. Can't fight city hall.
 

Boyd

Administrator
Site Administrator
Jul 31, 2004
7,715
Ben's Branch, Stephen Creek
Damn, just noticed that for some reason NJGIN has changed the name of these maps, so they no longer works on my site. Will fix this soon. There's also something new that might be interesting...

"NJ 1920 Coastal Imagery

This service provides access to a raster dataset containing scanned and georeferenced black and white aerial photographs of the Atlantic coast of New Jersey. Photograph date is believed to be 1920, based upon hand-written notation on some of the storage envelopes. In addition, photo 012 shows Turtle Gut Inlet to be open, and the inlet closed naturally in 1921. Source of original images: photographic archives of the Beach Erosion Board (predecessor of the former Coastal Engineering Research Center), presently stored at the Coastal and Hydraulics Laboratory, Engineer Research and Development Center, in Vicksburg, Mississippi, USA"
 

Boyd

Administrator
Site Administrator
Jul 31, 2004
7,715
Ben's Branch, Stephen Creek
The problem with the 1970 and 1977 aerials has been fixed and they are accessible again. If they don't work properly for you, try refreshing the page a couple times. If that doesn't help, you might need to clear your browser's cache.

The 1920 coastal imagery is also available now, see:

 
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