Upload Your Shapefiles
Step 2Upload Required Files
Requirements for HUC12 Analysis:
- Upload 1 shapefile: HUC12 watershed boundaries (12-digit codes)
- Must contain fields:
huc12 or HUC12, tohuc or TOHUC
Requirements for HUC10 Analysis:
- Upload HUC12 shapefile: For flow network analysis (12-digit codes)
- Upload HUC10 shapefile: For boundary delineation (10-digit codes)
- Both must be from the same region
- HUC12 must contain:
huc12, tohuc fields
- System will derive HUC10 headwaters using "no incoming flow" logic
Step 3Select Shapefile Files
Drop files, folders, or ZIP archives here
Supports: Shapefiles (.shp, .shx, .dbf, .prj), ZIP files, folders
Step 4Load & Process Files
This will load the shapefile and generate an initial map
Loading...
Processing...
Initializing...
Click any watershed on the map (or search above) to highlight it: gold = selected, purple = upstream network, green = downstream network.
Headwater Analysis Results
Export Options
Exports shapefile with current state (original data, headwater analysis, or highlighted watersheds)