Data Collection Report - Flood Control District of Maricopa County

multiple use benefits to the community. The results of the agencymeetings are summarized in the following sections.City of Phoenix (COP)The City of Phoenix occupies the east half of the study area. There ismore existing development in this part of the study area than in any otherportion. Due to the extent of the development near the Interstate 17 andInterstate 10 freeway interchange, there is little opportunity for drainageimprovements in this urbanized area. There are many new subdivisionsin the planning and/or construction phase throughout the rest of the Cityof Phoenix portion of the study area, which are replacing existingagricultural lands, however the major portion of the City of Phoenix inthe study area remains agricultural.The Tres Rios wetlands project resides at the City of Phoenix 91 st Avewastewater treatment plant and may affect the outfall locations ofdrainage improvements in the vicinity. The City is receptive torecreational projects such as trails and parks in conjunction with a floodcontrol project.City of TollesonThe City of Tolleson is familiar with the objectives of the study, basedon the outcome of the previous study Floodplain Delineation of theTolleson Area and the Candidate Assessment Report for Tolleson -SPRR, Van Buren Street at 91 st Ave, which identified local drainageproblems and potential solutions. The City does not have an existingstorm drainage system although there are some catch basins which havedrain connections into the Salt River Project irrigation system. Newdevelopments in the City of Tolleson are required to retain the 100 year,6 hour storm runoff, and are also required to accept the runoff fromexisting adjacent properties. There is currently no city wide drainagemaster plan. The city is receptive to drainage improvements andcombined recreation opportunities, although funding for projects hasbeen an issue with residents in the past.There are several known flooding problems in the downtown area ofTolleson, along the railroad, along the Roosevelt Irrigation District canaland northwest of 91 st Ave and the railroad in a vegetable processing area.There are only a few public works projects currently planned in the Cityof Tolleson. The widening of 91 st Ave is a street improvement projectwhich also includes putting one of the main SRP irrigation ditches intoa pipe, and possibly building a regional retention basin to handle stormrunoff.City of AvondaleThe City of Avondale occupies or will soon be annexing the west thirdof the study area, and is quickly developing with new residential andcommercial projects. More than 37 projects are currently in theplanning, permit, or construction phase. The only major drainagestructures in the City of Avondale are the levee pipes into the Agua FriaRiver. Some of the known flooding problems in the City are along 115 thAve north of the railroad, 115 th Ave between Broadway and Southern,and the Rio Vista and Las Ligas neighborhoods which are at low pointsbehind the levee, and along Van Buren Street. The City indicated thatapproximately 200 cfs flows in the vicinity of the east bridge approachof Van Buren Street out to the Agua Fria River.The City of Avondale is actively participating in the Tres Rios Greenwayand desires to have a blanket agreement to improve and landscape theareas behind the levee on the Agua Fria River. The City is receptive tocooperating on opportunities to provide recreation facilities inconjunction with flood control projects. There are some large existingeasements in the City for the major overhead power transmission lineswhich cross through the study area. Some of the easements are not usedand will be considered for trails and recreation opportunities as part ofa flood control project.Maricopa County Department of Transportation (MCDOT)The Maricopa County Department of Transportation is mainly involvedin the study area as far as transportation improvements are concernedand how they relate to or affect any drainage improvements. Currentlythere are five projects in the planning or construction phase, none ofwhich will have any major impacts on drainage in the study area. Twoof these projects include the 59 th Ave crossing of the Salt River and theimprovements of 115 th Ave. The 115 th Ave improvements include aculvert under the roadway at the Southern Pacific Railroad crossing.The County is also preparing to construct two small bridges over theBuckeye Feeder Canal on Chamber and Rosier Streets off of 115 th Ave.These bridges will be considered in selecting the preferred alternative forthe Buckeye Feeder Canal.Maricopa County Recreation Services DepartmentThe Maricopa County Recreation Services Department is responsible forpreserving and maintaining parks on Maricopa County lands. Most ofthe County parks are several thousand acres in size, as they do notparticipate much in the development of local and regional parks. TheCounty is receptive to participating in the “El Rio” project, which is adownstream continuation of the Tres Rios project, and includes riverrestoration, flood control, and recreational opportunities. A County trailDIBBLE & ASSOCIATES 6 DURANGO ADMPDATA COLLECTION REPORT