Modernization of Idaho StreamStats: Updates to Statewide Basin Characteristics and At-Site Peak Streamflow Statistics

The Idaho Transportation Department (ITD) is seeking to enhance the Idaho StreamStats application by incorporating updated basin characteristics, hydrography, and at-site peak streamflow statistics using current datasets, advanced geospatial technologies, and modern hydrologic analysis methods. StreamStats is an important tool used by transportation engineers, planners, and water resource professionals to estimate streamflow characteristics that support the design and maintenance of bridges, culverts, drainage infrastructure, and other transportation assets. This project will leverage high-resolution lidar-derived elevation data, updated land cover and climate datasets, improved hydrography, and current flood-frequency analysis methods to strengthen the accuracy, consistency, and reliability of hydrologic information available through StreamStats. Research activities will include updating basin characteristics, recalculating peak-flow statistics using recent streamflow records, integrating updated information into the StreamStats application, and publishing supporting datasets to promote transparency and future use. The resulting tools and workflows will provide ITD and its partners with enhanced hydrologic information to support infrastructure design, flood risk assessment, regulatory compliance, and long-term transportation planning.

Language

• English

Project

• Status: Programmed
• Funding: $288,000.00
• Sponsor Organizations:

  Idaho Transportation Department

  11331 W Chinden Blvd
  Boise, ID  United States  83714
• Project Managers:

  McDowell, Herbert

• Start Date: 20261001
• Expected Completion Date: 20280930
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Data collection; Hydrography; Hydrology; Statistics; Streamflow
• Identifier Terms: Idaho Department of Transportation
• Subject Areas: Data and Information Technology; Environment; Hydraulics and Hydrology; Planning and Forecasting; Transportation (General);

Filing Info

• Accession Number: 01998381
• Record Type: Research project
• Source Agency: Idaho Transportation Department
• Files: RIP, STATEDOT
• Created Date: Aug 4 2026 4:20PM