Data Collection Report - Flood Control District of Maricopa County

Buckeye Feeder CanalThe Buckeye Feeder Canal along 115 th Ave is a known flooding area dueto the limited capacity of the canal to convey storm water and featureswithin the canal such as culverts which restrict the flow. The BuckeyeFeeder Canal floodplain is being delineated as part of this project fromthe Gila River to 91 st Avenue.91 st AvenueThe intersection of 91 st Avenue and Van Buren is a known floodingproblem due to the inadequate conveyance capacity of 91 st Avenuebetween Van Buren Street and the SPRR. There is an existing SRPirrigation ditch along the east side of 91 st Avenue which historicallyintercepts storm water flows generated east of 91 st Avenue. This ditchis not designed for storm flows and the culvert and pipe downstream ofVan Buren Street restrict the flow, resulting in ponding and flooding inthe direct vicinity of the intersection.Van Buren StreetIn the vicinity of 95 th and 96 th Avenues, Van Buren Street is a knownflooding problem due to ponding in the area. Runoff that accumulatesin this area comes from the east on Van Buren Street, from 91 st Avenue,and from the subdivisions north of the street. A lack of an existing stormdrain system in the street and inadequate roadway slope result in thepoor conveyance of storm flows through the area.C. Existing StudiesSeveral other studies of this area have been conducted. They include:1) Floodplain Delineation of the Tolleson Area,2) Tolleson - SPRR and Van Buren Street at 91 st Ave, CandidateAssessment Report,3) Drainage Concept Report, 115 th Ave - Gila River Bridge to MC 854) City of Phoenix - Estrella Village Plan,5) Salt-Gila River Floodplain Delineation Restudy6) Agua Fria River Floodplain Delineation RestudyD. Planned DevelopmentsStaff from the various cities have provided information regardingdevelopments, within their respective boundaries, which are currently inthe site planning, engineering, or review stages. Planned majordevelopments are illustrated on Figure II-2 and Figure II-3. The sizeand number of these developments are indicators of the pace at whichthis area is developing.E. Existing and Planned Major UtilitiesThe locations of existing and proposed utilities are indicated on theUtility Constraints Map, Figure II-4 and Figure II-5. The existing andproposed water and sewer lines information was collected from theCities of Phoenix, Tolleson, and Avondale. The map also shows thelocations of overhead high-voltage transmission lines (115 kV, 230kV,and 500kV), and high-pressure petroleum pipe-line. Additionally a 114"Effluent Line is shown, which delivers treated wastewater from the 91 stAvenue wastewater treatment plant to the Palo Verde NuclearGenerating Station to the west of the study area. Fiber Optic facilitiesare not shown on the utility maps due to the inability to obtaininformation from sources such as US West Communications, who areunwilling to release the information until the final design stage of aproject.The abundance of wastewater treatment plants and large diameter sewerand water lines in the study area is of particular importance and will becarefully considered along with the other existing and proposed utilitiesduring the design and development of the final alternative drainagesolution.The locations of existing drainage facilities, including major storm drainpipes are indicated on the Existing Drainage Facilities Map, Figure II-6.The locations of the major irrigation ditches and canals are indicated onthe Existing Irrigation Map, Figure II-7.F. Agency ContactsThe following agencies have jurisdiction within the project limits andhave been invited to participate in the study process as part of a ReviewCommittee:- City of Phoenix (COP)- City of Tolleson- City of Avondale- Maricopa County Department of Transportation (MCDOT)- Maricopa County Recreation Services Department- Maricopa County Planning and Development Department- Salt River Project (SRP)- Roosevelt Irrigation District (RID)Each of the agencies was contacted during the data collection phase ofthe project to inform them of the project and obtain pertinent informationregarding flooding problems, existing and planned projects, planningconstraints, and recreational and environmental opportunities within theproject limits. One of the project goals is to identify project participantsfor cost sharing and environmental enhancement to provide an“environmentally friendly” approach to flood control that providesDIBBLE & ASSOCIATES 5 DURANGO ADMPDATA COLLECTION REPORT