Surveying, Mapping and GIS: land characteristics

Showing posts with label land characteristics. Show all posts

Cameroon GIS Data - and the benefits of technology

Posted by Dave Smith On 3/18/2007 11:12:00 AM 1 comments

I have gotten a few good responses regarding Cameroon GIS data for the Engineers Without Borders project thus far. Things like this make me consider how fortunate we are -

Here in the US, there are quite a few excellent datasets, rich with attributes, and with excellent positional accuracy.

Satellite technology and other approaches have made it much easier to get data for rural areas and those without the economic support for GIS that we enjoy here.

I can't imagine getting this far, this quickly trying to do any of this 10 or 15 years ago...

So far, I have obtained SRTM tiles with elevation data and quite a few other datasets, for protected areas, land use/land cover and other information... This is starting to come together. But please keep the suggestions and data coming...

In Search of Cameroon GIS Data

Posted by Dave Smith On 3/16/2007 08:50:00 PM 1 comments

I am currently working with Engineers Without Borders to look at a project in Cameroon, to provide a rural village with a viable potable water supply. To this end, I am looking for any pointers toward GIS data, aerial photos, elevation data, imagery and anything else of value in engineering design and environmental science that would help in design of water distribution, water conveyance via pipeline, wastewater treatment and the like. I'd like to be able to evaluate the big picture, with regard to potential opportunities and constraints to engineering design, ahead of a site visit to take place later in the year.

If you have access to data or good knowledge of GIS data in the region, Please contact me offline at dsmith (at) synergist-tech.com.

2001 Multi-Resolution Land Characteristics data now available for CONUS

Posted by Dave Smith On 1/16/2007 07:51:00 AM 0 comments

Just received this announcement from a colleague:

National Land Cover Database (NLCD 2001)
The U.S. Geological Survey, on behalf of the interagency Multi-Resolution Land Characteristics Consortium (MRLC), is pleased to announce the availability of NLCD 2001 products for the conterminous United States. These products are web enabled for download from the MRLC website at www.mrlc.gov. NLCD 2001 products include 21 classes of land cover, percent tree canopy and percent urban imperviousness at 30 m resolution derived from Landsat imagery. NLCD 2001 will support a wide variety of users, institutional sectors and local- to national-scale applications with this updated land-cover data. Alaska, Hawaii, and Puerto Rico will be completed by December of 2007, which will then represent the first compilation of nationwide land cover ever produced at 30-meter resolution.

Great news for a wide variety of applications - I was just looking at a watershed application, myself, where this data will fit quite nicely.

I did a quick check, it's not yet visible in the MRLC map viewer, however the data is available via FTP - visit the Multi-Resolution Land Characteristics site: http://www.mrlc.gov/

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Cameroon GIS Data - and the benefits of technology

In Search of Cameroon GIS Data

2001 Multi-Resolution Land Characteristics data now available for CONUS

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