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Here's a quick look at some of the flood control work we do...
Structural Flood Control Facilities
Since its inception in 1978, the District has constructed over $280,000,000 worth
of major flood control facilities. These improvements include
bank stabilization, levees, regional detention basins, bridges
and various other drainage facilities. Since erosion is a major
consideration in our region, one of the District's main structural
flood control efforts has focused on protecting the channel banks
of major regional watercourses. To date, the District has constructed
more than 75 miles of bank stabilization, which has resulted
in the removal of hundreds of acres from flood and erosion hazard
areas. Check out our Capital Improvement
Projects section for maps and additional information on these
projects.
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Floodprone Land Acquisition To date, the District has purchased over 7,000 acres of floodprone land, primarily through its Floodprone Land Acquisition Program (FLAP). Land acquisition is undertaken mainly as a means of removing buildings and residents from potential flood hazards. The District has also used this approach to preserve natural floodplain characteristics in upstream areas and to discourage development from taking place in vulnerable locations.
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Floodplain Management
In conjunction with the above flood control
measures, the District also regulates building and development in designated
floodplain areas through its Floodplain and Erosion Hazard
Management Ordinance. Today virtually every manmade structure or modification
made in a designated floodplain is subject to these regulations. Since
1978, the District has issued over 10,000 Floodplain Use Permits. District
staff has reviewed an even greater number of site plans and resolved numerous
drainage complaints. Check out our Floodplain
Management section for more information on determining if you are
in a floodplain area, how to get a Floodplain Use Permit, information
on flood insurance, some "do's and don'ts" in floodplain areas
and more.
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Flood ALERT System and Emergency Response
An important part of providing flood protection work in any community
is maintaining effective flood warning and emergency preparedness
capabilities. The District operates an ALERT system (Automated Local Evaluation in Real Time ), which consists of a computerized network of
over 110 rain sensors, stream gauges and weather stations
installed throughout the community. The ALERT system automatically monitors and records rainfall,
stream flow and weather conditions and then transmits this information back
to the District's base station and the Tucson office of the National
Weather Service. The District augments this information with
Doppler radar data and first-hand information from a network
of volunteer weather watchers. The entire system plays a vital
role in forecasting and preparing for flood events, and also
helps monitor watercourse flows as flood events unfold. Other
important components of the flood warning program are the District's
Flood Response Plan and flood hazard mitigation program. Together,
these elements work to provide early warning capabilities, real-time
storm monitoring and post-disaster recovery programs for the
community.
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Other Activities
The District is involved in a host of associated activities that
ultimately help to minimize flood hazards in the community. Some
of these activities include river and basin management plans,
flood insurance studies, participation in the national Community
Rating System program, just to name a few. In recent years, an
increasingly important aspect of the District's work has involved
the management of natural resources associated with area streams
and floodplains. For example, in 1994 the District adopted a
series of riparian habitat regulations, which were incorporated
into its Flood and Erosion Hazard Management Ordinance. Maps,
photographs, ordinance language and other information on riparian habitats are available.
In light of its statutory authority, the District has more recently
been involved in several groundwater recharge projects. The District
has researched the feasibility of both stream bed and off-channel
recharge opportunities in a variety of locations. Currently,
several recharge projects are in progress in the northwest portion
of the metropolitan Tucson area. |

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