Data Series 412
U.S. GEOLOGICAL SURVEY
Data Series 412
Table 3. ArcHydro datasets tiled by 8-digit Hydrologic Unit Code.
[Abbreviations: NED, National Elevation Dataset; IDTM83, Idaho Transverse Mercator projection based on North American Datum of 1983; m, meter; DEM, Digital Elevation Model]
| Dataset name | Description |
|---|---|
| Basic grids used by ArcHydro Tools | |
| cat | Catchment grid. |
| dem | Digital elevation model, from NED, projected to IDTM83 projection, 10-m resolution, elevations in centimeters. |
| fac | Flow accumulation grid. |
| fac_global | Global flow accumulation grid (includes upstream HUCs). Present only for HUCs downstream of others. |
| fdr | Flow direction grid. |
| lnk | Link grid. |
| str | Stream grid used to define catchments. |
| str900 | Dense stream grid used for display and to guide delineation, 900-cell threshold. |
| Geodatabase feature classes used by ArcHydro Tools | |
| Catchment | Polygon version of cat grid. |
| AdjointCatchment | Polygons representing aggregated catchments upstream of each non-headwater catchment. |
| DrainageLine | ArcHydro drainage line feature class. |
| DrainagePoint | ArcHydro drainage point feature class. |
| LongestFlowPathCat | Longest flowpath in each catchment, computed by ArcHydro. |
| LongestFlowPathAdjCat | Longest flowpath in each adjoint catchment, computed by ArcHydro. |
| Basin characteristic grids | |
| bsldem10m | Basin slope based on a 10-m DEM. |
| nfsl30 | Grid of cells with north-facing slopes greater than or equal to 30 percent. |
| slop30 | Grid of cells with slopes greater than or equal to 30 percent. |
| Continuous parameter grids of basin characteristics | |
| bsld10_cpg | Average upstream basin slope based on a 10-m DEM for every cell. |
| elev_cpg | Average upstream basin elevation in feet for every cell. |
| forest_cpg | Average upstream percent forested area for every cell. |
| nfsl30_cpg | Average upstream percentage of cells with north-facing slopes greater than or equal to 30 percent for every cell. |
| precip_cpg | Average upstream basin precipitation in 10ths of 1 inch for every cell. |
| slop30_cpg | Average upstream basin percentage of cells with slopes greater than or equal to 30 percent for every cell. |
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