UNSPSC 81101520: Hydrology assessment service

Rainfall basis for stormwater calculations

UNSPSC 81101520 Hydrology assessment service, a Commodity code, describes technical evaluations of water systems, hydrologic conditions, and watershed characteristics that state and local governments procure to support infrastructure planning, environmental compliance, and water resource management. Recent solicitations show state and local buyers using the code for riparian restoration assessments, healthcare facility engineering evaluations, facility condition assessments including hydrologic components, building inspections with utility assessment elements, jail facility evaluations, dam safety hydrology reviews, erosion mitigation design with hydrologic analysis, environmental testing and HTRW sampling, flood mitigation feasibility studies, and operational guidelines for water agreements. The issuing bodies span state departments (California Department of Water Resources, Texas Facilities Commission, Georgia Department of Transportation), counties (Marion County Oregon, DeKalb County Georgia, Liberty County Georgia, Hillsborough County Florida), cities (Zephyrhills Florida, Clearwater Florida, Phoenix Arizona, Arlington Texas, Richardson Texas, Wichita Kansas), water authorities (Tampa Bay Water, Beaufort-Jasper Water & Sewer Authority, Alameda County Water District, Urban Flood Safety & Water Quality District), school districts (Beaverton School District Oregon), and special-purpose districts (Gila River Indian Community). Recent activity concentrates in California (dam safety review, levee system environmental assessment, erosion mitigation), Georgia (healthcare facility and jail assessments, water supply wellfield design), Florida (facility condition assessments, water and wastewater infrastructure), and Oregon (riparian restoration, levee environmental testing).

Representative opportunities include the California Department of Water Resources Division of Safety of Dams soliciting a hydrologic engineering expert for a three-member technical review board evaluating dam safety and hydrology methodologies (SOQ due July 17, 2026), Liberty County Georgia Board of Commissioners requesting proposals for a multi-disciplinary jail facility evaluation covering hydrologic and infrastructure assessment with a July 30, 2026 RFP deadline, the Gila River Indian Community seeking erosion mitigation design services with hydrologic and hydraulic calculations for a July 10, 2026 RFP deadline, the California Department of Transportation Division of Project Delivery procuring hydraulics engineering services on an as-needed basis across nine Northern California counties for $8 million to $13 million over three years (SOQ due June 8, 2026), and the Urban Flood Safety & Water Quality District requesting environmental HTRW testing and soil sampling for the Portland Metro Levee System with a June 17, 2026 proposal deadline and estimated contract value around $75,000. These procurements signal active demand for hydrologic assessment expertise in infrastructure adaptation, environmental remediation, and water resource planning across multiple state and local jurisdictions.