Fine scale impervious surface layer?

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Alex Wolf (he/him) - Scenic Hudson

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Jun 10, 2021, 3:59:49 PM6/10/21
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Hi all,

We've been working on identifying/mapping opportunities for low-impact solar development, and large parking lots and rooftops are top of the list.  The Microsoft Building Footprints layer, now hosted by ESRI, is a great layer for buildings nation-wide (lower 48 at least).  I've found impervious surface layers based on NLCD and similar-resolution (https://sedac.ciesin.columbia.edu/data/set/ulandsat-gmis-v1) data, but nothing with fine enough scale to meaningfully map large parking lots in the Hudson Valley.  Is anyone aware of a fine-scale impervious surface layer for the HV?  I'd also be interested in somewhat smaller coverages (e.g. single counties) if they exist.

Thanks,
Alex

Brendan Murphy

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Jun 10, 2021, 4:03:04 PM6/10/21
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NYCDEP has a very fine-scale impervious surface layer for their watersheds.  It’s not publicly available, but I think they’re open to data requests.

 

Brendan Murphy

Dir. of Stewardship

Westchester Land Trust

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Christopher Young

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Jun 10, 2021, 4:20:02 PM6/10/21
to Brendan Murphy, Hudson Valley SCGIS Chapter

NYS Clearinghouse has a 1 ft DEM for Columbia and Rensselaer Counties. I use it for verifying georeferenced surveys. I can pick out stone walls with it. It might be adapted for your purpose.

David Richardson

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Jun 10, 2021, 4:22:47 PM6/10/21
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Ulster County has 1m resolution landcover that was created by UVM in 2013 for mapping the Delaware River watershed, but they extended it to cover all of Ulster, which is nice.  https://www.pasda.psu.edu/uci/DataSummary.aspx?dataset=3167

 

The Chesapeake Bay Conservancy mapped all of that watershed similarly at 2m resolution a while back (also 2013/2014), which covers the Susquehanna portion of NY, but won’t help in the Hudson Valley.

 

-Dave

Haeckel, Ingrid B (DEC)

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Jun 10, 2021, 4:25:44 PM6/10/21
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CCAP has 10-meter resolution beta land cover data for NYS... better than typical 30-m data.

Best
Ingrid

Ingrid Haeckel ​(she/her)

Conservation and Land Use Specialist, Hudson River Estuary Program/Cornell University


New York State Department of Environmental Conservation

21 South Putt Corners Road, New Paltz, NY 12561

ingrid....@dec.ny.gov 

www.dec.ny.gov 



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David Richardson

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Jun 10, 2021, 4:33:24 PM6/10/21
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Westchester County’s GeoHub portal (https://gis.westchestergov.com/) also has all the parking lots as a layer in their planimetric data that you can download. 

 

You might try asking for planimetric data from the other NY cities/towns/counties you are looking at (I don’t know if any of the others have their planimetrics online or not).

 

-Dave

john.mi...@yahoo.com

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Jun 10, 2021, 5:17:07 PM6/10/21
to Hudson Valley SCGIS Chapter, Alex Wolf (he/him) - Scenic Hudson
Hi Alex,

You really want the 2013 1m UVM\Delaware LULC data that Dave Richardson mentioned.

Remarkable resolution both spatially and thematically (3 levels of imperv including paved\roofs with overhanging vegetation). You could also easily build a logical spatial model combining zoning and building footprint\address points to further enhance.

-j

John Mickelson
Geospatial and Ecological Services
1231 State Route 28A


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Alex Wolf

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Jun 11, 2021, 9:30:49 AM6/11/21
to john.mi...@yahoo.com, Hudson Valley SCGIS Chapter
Hi all,

Thanks for the great suggestions - lots of leads to follow up on.

Cheers,
Alex
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