USGS Gap Analysis Project - Additional Data – Hydrography

Water and its location on the landscape are important aspects of a species distribution. A number of water related data layers were used to refine these species models. These include water type (i.e. flowing, open/standing), distance to and from water, and stream flow and underlying gradient. The source for this data was the USGS National Hydrography Dataset (NHD)(USGS 2007). Hydrographic features were divided into three types: flowing water, open/standing water, and wet vegetation. These feature types were extracted from the NHD by selecting the corresponding codes (the FCODE attribute) in datatables and creating seperate datasets for each data type. To facilitate their use in spatial modeling, these feature types...

Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Biodiversity, Conservation, Deductive Modeling, Distance to water, Flowing Water, All tags... Habitat Modeling, Hydrography, Predicted Habitat, Standing Water, United States, Wet Vegetation, Fewer tags