RDR 3 Report - Flood Control District of Maricopa County

I. INTRODUCTION
A. Objective
This Recommended Design Report has been prepared for the Flood
Control District of Maricopa County (FCDMC) as part of the Durango
Area Drainage Master Plan (ADMP). The study area location is shown
on Figure I-1. The purpose of the project is to quantify the extent of
flooding problems and develop alternative solutions to identified
flooding problems. The ADMP process evaluates the drainage area,
identifies structural and non-structural alternatives, and develops a
preferred solution. The ADMP identifies preliminary costs, alignments,
typical sections, right-of-way requirements, utility conflicts,
environmental issues, landscape design concepts, and potential project
participants for the preferred alternative. The recommended plan of the
ADMP addresses mitigation of flooding along the Buckeye Feeder
Canal (BFC), the Roosevelt Irrigation District (RID) Canal, and the
Union Pacific Railroad (UPRR). This project includes the delineation
of the 100-year floodplain for the BFC associated tributaries, from the
Agua Fria River eastward to approximately 105 th Avenue and an
extension of the Tolleson floodplain delineation along the UPRR
extending from 69 th Avenue to 35 th Avenue. The new floodplain
delineations are documented in the Durango ADMP Floodplain
Delineation, Final Report and Technical Data Notebook.
B. Study Area Location
The study area is within Maricopa County and includes portions of the
City of Phoenix, the City of Tolleson, the City of Avondale, and
unincorporated Maricopa County. The jurisdictional boundaries are
depicted on Figure I-2. The study area encompasses approximately 53
square miles bounded by the Interstate 10 freeway on the north, the Salt
and Gila Rivers on the south, the Agua Fria River on the west, and the
Interstate 17 freeway on the east. The study area has been divided into
three geographic areas.
The Northern Study Area extends the full width of the study area from
the Agua Fria River eastward to I-17 and from I-10 southward to the
UPRR at approximately Buckeye Road. The Southwest Study Area
extends from the Agua Fria River eastward to approximately 83 rd
Avenue and from the UPRR southward to the Gila River. The
Southeast Study Area extends from approximately 83 rd Avenue
eastward to I-17 and from the UPRR southward to the Salt River.
C. Existing Reports
The Durango area has been previously studied in other master plans and
studies. These plans and studies are discussed in the Durango ADMP
Alternatives Analysis Report, dated March 2001. Improvements
identified in this report are based on preliminary information contained
in the Alternatives Analysis Report, and the Durango ADMP Data
Collection Report, dated March 2000. The reader is referred to the
Alternatives Analysis Report for additional background information on
the alternatives considered and the selection process.
D. Project Coordination
A Review Committee was established by the FCDMC to provide
coordination and input throughout the project. The Review Committee
consisted of representatives of the agencies that will be impacted by the
project and have an interest in its outcome. The Review Committee met
for the following meetings:
1. Project kick-off meeting.
2. Brainstorming meeting to identify drainage problems and
alternative solutions.
3. Potential Alternatives meeting to confirm the drainage
alternatives identified by the consultant to be developed in detail
for the alternatives evaluation.
4. Preferred alternative meeting to evaluate the alternatives and
select a preferred alternative for further design development.
5. Project Prioritization Meeting to determine the appropriate
priority of each project throughout the study area.
Figure I-1. - Study Area Location
The Review Committee consisted of the following members:
REVIEW COMMITTEE
Agency
Representative
City of Avondale
Mr. Jim Mitchell
Flood Control District of Maricopa County Multiple Members
Maricopa County Dept of Parks & Recreation Mr. Dave Konopka
Maricopa County Dept of Planning & Dev. Mr. Neil Urban /
Mr. Matthew Holmes
Maricopa County Dept of Transportation
Mr. Mike Smith
City of Phoenix Mr. Hasan Mushtaq /
Mr. Raimundo Dovalina / Ms. Chris Hood
Roosevelt Irrigation District
Mr. Stan Ashby
Salt River Project Mr. Steven Tanis /
Mr. Bill Phillips
City of Tolleson Mr. Woody Scoutten /
Mr. Manuel Dominguez
U.S. Army Corps of Engineers Mr. Mike Ternak /
Mr. John Drake
Buckeye Irrigation District
Mr. Jackie Meck
DIBBLE & ASSOCIATES 1 DURANGO AREA DRAINAGE MASTER PLAN
August 2002
RECOMMENDED DESIGN REPORT