Drainage Overview - Maricopa County Department of Transportation

2. EXISTING STUDIES AND OTHER DATA SOURCES
Numerous drainage, geologic, and groundwater studies and other drainage-related documents have been
prepared within or adjacent to the study area. A complete list of the existing documents reviewed is
included in Appendix TM3-01. Summaries of the most relevant documents are provided in the
following sections. The general order of presentation and discussion is from west to east.
2.1 Summary of Drainage Studies
A map depicting the drainage studies that are in the general vicinity of the study area is provided
as Figure 2 at the end of this section. The drainage studies shown in Figure 2 that have direct
relevance to the Deer Valley Parkway study area are briefly discussed below. These drainage
studies were reviewed for descriptions of existing hydrology, drainage features, and existing
drainage patterns. Most of these drainage studies were completed for the Flood Control District
of Maricopa County (FCDMC).
2.1.1 Sun Valley Area Drainage Master Plan Step 3 Recommended Alternative Report
(2006)
This Area Drainage Master Plan (ADMP) was prepared for the FCDMC as a follow-up to
the Buckeye/Sun Valley Area Drainage Master Study completed in 2006. The ADMP
contains seven volumes that document the last step of a three step process to develop a
regional flood control master plan and present specific recommended regional drainage
improvements for alluvial fans. The master plan watershed extends from the Hassayampa
River to the White Tank Mountains. The Deer Valley Parkway study area crosses the
Central Arizona Project (CAP) sub-area (Volume 2 of the ADMP).
2.1.2 Sun Valley Area Drainage Master Plan Area 4 Hydrology Technical Data
Notebook (2006)
This study was prepared for the FCDMC in conjunction with the Sun Valley ADMP to
provide hydrologic documentation for Area 4 (North Sun Valley Area). The Sun Valley
study limits extend from the Hassayampa River to the White Tank Mountains. This overall
watershed was subdivided into four hydrologically distinct areas, with the Deer Valley
Parkway study area falling within Area 4 (North Sun Valley Area). Two washes cross the
Deer Valley Parkway study area: Wash 1 and Wash 2.
2.1.3 Wittmann Area Drainage Master Study Update (2005)
This FCDMC Area Drainage Master Study Update (ADMSU) identifies drainage patterns
and flooding within the Wittmann area and hydrology and alternatives analysis for
McMicken Dam. The master plan watershed extends from the Hassayampa River to the
Agua Fria River. Volume HY provides hydrologic documentation, Volume HD provides
floodplain delineation reports, Volume MA provides the alternatives analysis for McMicken
Dam, and Volume MD provides the McMicken Dam hydrology. This study includes the
following washes that cross the Deer Valley Parkway study area: Wash 1, Wash 2, Wash 3,
Wash 4, Wash 5, 5 West Wash, Iona Wash, Iona Wash (West Split), Trilby Wash, 2 West
Wash, 1 West Wash, and 4 East Wash.
091337137, 2011-018, TT005 Maricopa County Department of Transportation
Technical Memorandum 3 Deer Valley Parkway Feasibility Study
Drainage Overview 4 April 2012