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Sabino Creek and Bear Canyon Wash Mapping

Program Goals/Predicted Outcomes

The Sabino Creek and Bear Canyon Wash FEMA mapped floodplains are not accurately reflected on the current Flood Insurance Rate Maps (FIRMs). Observed streamflows at the USGS and CTP’s ALERT gages indicate that the regulatory discharge (1 percent annual change runoff) is too low.  The goal of this contract is to provide FEMA with work map products to republish the FIRMS to indicate current flood hazards.

Public Benefit

For more information contact:
Eleonora Demaria, Project Manager (520) 724-4600

Without republishing the FIRMs to reflect accurate flood hazards, both private structures and public infrastructure could be at risk for damages from future flood events or force overdesign of future structures thus increasing construction costs.

Metrics Available to Measure Performance

The Sabino Creek and Bear Canyon Wash Risk Analysis and Mapping project is part of a FEMA grant for three separate floodplain mapping activities. The grant specifications are contained in a Mapping Activity Statement (MAS). The MAS requires quarterly reporting. The consultant is to provide monthly status reports and is to assist the District in all the reporting as mandated by the grant.

 

Schedule

Anticipated project schedule:
 Activities   Start Date Tentative End Date
 Project Management 7/1/2020 7/1/2020
 Field Surveys 7/1/2020  3/1/2021
Develop Topographic Data 8/1/2020 11/1/2021
Basemap Preparation 10/1/2020 12/1/2021
Develop Hydrologic & Hydraulic Data 8/1/2020 12/1/2021
Develop Non-Regulatory Products 9/1/2020 12/1/2021
 Perform Floodplain Mapping 8/1/2020 12/1/2021
Develop FIRM Database 4/1/2021 2/1/2022

Project Updates

Project Description

The objective of the Flood Risk Project is to develop and/or support flood hazard data and program-related tasks through completing technical floodplain study and mapping activities. These activities are intended for incorporation as new or updated Flood Insurance Rate Maps (FIRM) and Flood Insurance Study (FIS) reports for one or more communities within the project area.

The FEMA mapped floodplains for the Sabino Creek and Bear Canyon Wash do not reflect true flood risks. The data from the United States Geologic Survey stream gage (09484000) and the Pima County ALERT gage (1163) indicate the FEMA regulatory discharge (1 percent annual chance runoff) is too low. Furthermore, the current SFHA boundaries as shown on FIRM panels 04019C 1715 Land 1720 M do not fit within topographic boundaries. New Flood Risk Products are needed to revise current effective FIRMs.

Project Elements

Maps

RiskMap - Coming soon, when available
Floodplain Work Maps - Coming soon, when available

Public Outreach