[Talk-us] National Wetlands Inventory

I'm wondering if anyone has any experience with the National Wetlands Inventory: http://www.fws.gov/wetlands/ At first glance it looks like better-quality data than the NHD for both wetlands and water. ___ Talk-us mailing list Talk-us@openstreetmap.org

Re: [Talk-us] National Wetlands Inventory

I'm not an expert on either of these data sets, but I know enough to say that USGS sponsored the development of the NHD, largely to replace the old digital line graph (DLG) products. NHD serves as a multi-purpose inventory of surface waters, grouped by watershed. OTOH, FWS sponsored development of

Re: [Talk-us] National Wetlands Inventory

Hmm. It sounds like we want the routability of the NHD reach-code system with the accuracy and completeness of the Wetland Inventory. I wonder if there's some gotcha in the FWS dataset that would make it inappropriate to use. For example, I see a lot of freshwater areas that are really

Re: [Talk-us] National Wetlands Inventory

It's been my experience way back when in a past life that the Wetlands Inventory (while busier and therefore appears to have more data) really wasn't all that great spatially. We would use it for a reference for mapping - as in there should be a wetland here and then interpret the correct