Lee Moore Wash Basin Management Study

Project Purpose and Need

Pima County Regional Flood Control District is conducting the Lee Moore Wash Basin Management Study to identify the drainage and flooding hazards within the watershed and develop alternatives to address those hazards. A Basin Management Study is a comprehensive study that estimates flood and erosion potential for a watershed, maps watercourses, identifies existing and potential problems and develops preliminary solutions and standards for sound floodplain and stormwater management.

The initial effort is to collect data, identify known flooding hazards and map floodplains. This includes researching historical flooding data and current land-use plans, as well as gathering information from stakeholders and the public.

The team will then formulate a floodplain management approach consisting of structural and non-structural alternative solutions to reduce or eliminate flooding hazards, which will be further compared and evaluated to develop a set of preferred alternatives.

When the study is completed, the District will have a comprehensive assessment of flood and erosion hazards. Once implemented, the strategies in the plan should reduce damages to property or loss of life from drainage issues and stormwater flooding.

Scope of Work:

• Data Collection: Develop a data base of existing land use and drainage information.
• Hydrology and Hydraulics: Determine quantity and limits of stormwater runoff.
• Floodplain Mapping: Delineate 100-year floodplains.
• Public Involvement: Regular open house meetings to inform and obtain public input.
• Stakeholder Involvement: Facilitate meetings to inform and include stakeholder concerns.
• Environmental Considerations: Biological and cultural resources.
• Erosion Hazards: Identify problem areas for scour and sedimentation.
• Rules of Development: Provide management guidelines for future development.
• Schedule: Completion anticipated in Summer 2008.

Your Input:

This project is strongly supported by the Pima County Board of Supervisors, the City of Tucson and the Town of Sahuarita.

It is important that the stakeholders stay involved in the process as they have valuable knowledge and multiple responsibilities within the watershed that could significantly influence the project’s success. We invite and encourage your support of this study. Please stay involved by visiting our website, talking to the study team and attending future stakeholder meetings.

For more information contact:
Bill Zimmerman, Chief Hydrologist
520.243.1800