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Spillway Hydrologic and Hydraulic Analysis

Active

State & Local

Response Deadline10/29/2026, 11:00:00 PM UTC

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

AI Contract Overview

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This subcontract for the City of Napa involves providing specialized hydraulic modeling services for dam safety projects. The selected contractor will support prime contractors by conducting watershed hydrologic evaluations, calculating Probable Maximum Flood levels, and performing spillway capacity analyses to identify structural deficiencies and propose rehabilitation alternatives. All work must be completed using HEC-RAS software in strict accordance with current PMF design criteria and DSOD standards, culminating in a detailed hydraulic analysis report. The opportunity is categorized under NAICS code 541330 and is focused on performance within the 94558 zip code area. Interested parties must submit their responses by the deadline of October 29, 2026.

General Info

Hydraulic modeling for City of Napa dam safety projects due October 29, 2026.

Agency

California → City of Napa

NAICS

541330 - Engineering Services

Place of Performance

CA, 94558, USA

Set-Aside

NONE

Documents

This scope was carved out of 2026-RFQL-054.

The full solicitation package (17 documents), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

Request For Qualifications - Conn Dam Stability Assessment, Spillway Improvements, And Feasibility Alternatives Study

AI Contract Breakdown

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Timeline

PostedOct 7

subcontract

Response DeadlineOct 29

Submission deadline

Response Deadline

10/29/2026, 11:00:00 PM UTCin 14 days

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Organization & Contact Information

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AgencyCalifornia → City of Napa

ContactsNo contacts available

OfficeN/A

Organization / AgencyCalifornia → City of Napa

Office AddressN/A

ContactsNo contact information available

Full Description

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Performs hydraulic modeling for prime contractors on City of Napa dam safety projects. Conducts watershed hydrologic evaluations, Probable Maximum Flood (PMF) calculations, and spillway capacity analysis to identify deficiencies and recommend rehabilitation alternatives. Utilizes HEC-RAS software per current PMF design criteria and DSOD standards. Delivers a hydraulic analysis report and recommended spillway alternatives.

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