USGS Watershed Data Viewer

Supported Regions & HUC Codes:

• Verified Working Regions:
•   • Region 03: South Atlantic-Gulf (Verified)
•   • Region 05: Ohio (Verified)
•   • Region 06: Tennessee (Verified)
•   • Region 08: Lower Mississippi (Verified)
• Additional Regions (May Have Limited Availability):
•   • Region 01: New England
•   • Region 02: Mid-Atlantic
•   • Region 04: Great Lakes
•   • Region 07: Upper Mississippi
•   • Region 09: Souris-Red-Rainy
•   • Region 10: Missouri
•   • Region 11: Arkansas-White-Red
•   • Region 12: Texas-Gulf
•   • Region 13: Rio Grande
•   • Region 14: Upper Colorado
•   • Region 15: Lower Colorado
•   • Region 16: Great Basin
•   • Region 17: Pacific Northwest
•   • Region 18: California
• HUC Code Format:
•   • HUC10: 10-digit codes starting with region number (e.g., "03", "06", "12")
•   • HUC12: 12-digit codes starting with region number (e.g., "03", "06", "12")
• Note: Some regions may return errors if data is not available in the USGS API or if the API is experiencing temporary issues.

Usage:

• Fetch All: Select region and HUC size, leave HUC code empty
• Filter Specific: Enter a specific HUC code to filter results

Example Specific Codes:

• Region 01 HUC10: 0100000001
• Region 01 HUC12: 010000000101
• Region 03 HUC10: 0300000001
• Region 03 HUC12: 030000000101
• Region 06 HUC10: 0600000001
• Region 06 HUC12: 060000000101
• Region 12 HUC10: 1200000001
• Region 12 HUC12: 120000000101
• Region 18 HUC10: 1800000001
• Region 18 HUC12: 180000000101

Features:

• Direct API access to USGS data
• Interactive map with zoom/pan
• Automatic boundary fitting
• Real-time data fetching
• Region and HUC size validation

Restrictions & Notes:

• Only HUC10 and HUC12 supported
• Cannot mix regions in same session
• Data availability depends on USGS API
• Regions 03, 05, 06, and 08 are verified to work reliably
• Other regions may work but have not been fully tested