Upload
others
View
2
Download
0
Embed Size (px)
Citation preview
El Paso Water Utilities El Paso Stormwater Master Plan The City of El Paso Section 2.0 - Overview of Existing Stormwater Drainage System
Page 2-1 March 2009
2.0 OVERVIEW OF EXISTING STORMWATER DRAINAGE SYSTEM
El Paso has an arid, warm climate with hot, low-humidity summers and mild, dry winters. Average daily temperatures range from a high of 55 to a low of 33 degrees Fahrenheit (ºF) in January and a high of 97ºF to a low of 72ºF in July. The mean annual precipitation is approximately eight inches with most of it occurring during July through September. Most of the rain in the El Paso area consists of afternoon thunderstorms caused by the monsoonal flow from the Gulf of California. These thunderstorms are high intensity with short duration. The Franklin Mountains dominate the skyline of El Paso and range approximately 16 miles long and 5 miles wide with a general relief of over 3,000 feet above the surrounding area. The Franklin Mountains are the southernmost extension of a series of north-south ranges across the western United States. They are comprised of pre-Cambrian to Pleistocene-age rocks and are locally overlain by recent sediment. The rocks consist of granite, rhyolite, marble, quartzite, sandstone, limestone, dolomite, conglomerates, colluvium, and alluvium. The Franklin Mountains are characterized by a single range of knife-edge ridges that are uplifted bedding dipping steeply to the east. The central core of the mountains is comprised of vast exposures of bedrock with little sediment accumulation or soil formation. The major canyons, from north to south, that flow toward the eastern face of the range are Hitt, Fusselman, and McKelligon and on the western face of the range, the major canyons are Vinton and Avispa. For the purpose of the SMP, the master plan study area was divided into six regional study areas:
• Central; • East Side; • Mission Valley; • Northeast; • Northwest; and • West Central.
These study areas were delineated based on the contributing watersheds to unique geographical areas. The regional division of the study area is shown on Figure 2-1 and extends beyond the incorporated limits into the extraterritorial jurisdictional limits.
The study areas were further divided into “systems” based on clearly identified needs, historical flooding problems, structural or systematic deficiencies, and potential solutions. The study areas and systems are discussed in detail in this section.
El Paso Water Utilities El Paso Stormwater Master Plan The City of El Paso Section 2.0 - Overview of Existing Stormwater Drainage System
Page 2-2 March 2009
2.1 Central Region
The Central Region, shown on Figure 2-2, encompasses most of the downtown area and some of the City’s oldest and most historic neighborhoods. This area of the City is fully developed up to the foothills of the Franklin Mountains. Stormwater runoff is conveyed to the Rio Grande through a series of underground conduits.
The Central Region is characterized by two different drainage patterns and land types: the Franklin Mountains and the valley. The Central Region consists of three systems: Government Hills System, Cebada System, and Dallas System. The Central Region Drainage System consists of 12 dams, 3 pump stations, 20 stormwater ponds, and 35 miles of identified conveyance systems. Historically, the Central Region suffers from frequent flooding of the downtown area and segments of Interstate Highway 10 (IH-10). There is insufficient detention upstream of the developed areas and inadequate conveyance through the downtown area to prevent flooding. Due to the flat terrain of the valley floor, gravity drainage to the Rio Grande is not always an option. The downtown area is fully developed and space is not readily available for pump station basin enlargements or new pump station basin placements.
2.2 East Side Region
The East Side Region, shown on Figure 2-3, is the area just south of the Fort Bliss Military Reservation, north of IH-10 and east of Robert E. Lee Road. The East Side Region is one of the largest areas of town consisting primarily of middle class neighborhoods and is one of the fastest growing. The existing drainage infrastructure for this area primarily consists of a significant number of retention and detention basins.
The East Side Region is characterized by three different drainage patterns and land types: the high mesa comprising the majority of the watershed in the upper portion of the region, the escarpment zone between the high mesa and the Rio Grande Valley, and the IH-10 corridor.
The high mesa is relatively flat and the primary method for controlling stormwater in this area is through localized ponds. The East Side Region is divided into four systems: Phelps Dodge System, Lomaland System, Americas Basin System, and Americas Ten Basin System. The East Side Region contains one dam and nine open channels. Older development areas utilized large regional basins to address stormwater concerns. However, because the terrain is flat, any flow that has to travel a great distance to a basin or any flow that overtops a basin results in a flooding problem within the local streets. The escarpment zone is where the terrain drops off from the high mesa towards the Rio Grande. The steeper slopes result in higher stormwater runoff velocities, which increase the erosion potential.
El Paso Water Utilities El Paso Stormwater Master Plan The City of El Paso Section 2.0 - Overview of Existing Stormwater Drainage System
Page 2-3 March 2009
IH-10 is located about midway down the escarpment zone. IH-10 was constructed in the mid 1950s. Since then, adjacent properties have developed into the current commercial and industrial land uses seen today. Surface runoff from these commercial and industrial areas has resulted in large surface flows within the IH-10 corridor.
2.3 Mission Valley Region
The Mission Valley Region, shown on Figure 2-4, is considered the oldest settled area of El Paso, dating back to the late 17th century. This region is bounded by the Rio Grande and IH-10 and lies just east, and south of the Central and East Side Regions, respectively. This area of town has extremely flat topography and a variety of land uses, from agricultural to industrial. The existing predominant drainage features are irrigation drains that parallel the Rio Grande.
The Mission Valley Region is downstream of IH-10 and consists of the escarpment zone and the lower valley. The lower valley is characterized by relatively flat terrain, is impacted by discharges from the East Side, and experiences some of the same drainage problems as the Central downtown area. The Mission Valley Region has been divided into three systems: Basin A System, Basin G System, and Mesa Drain System. The Mission Valley drainage features consist of 71 ponds, 8 pump stations, 8 dams, and 49 miles of identified drainage conveyance systems. Due to the flat terrain of the valley floor, gravity flow to the Rio Grande is not always an option. The agricultural drains, which are included as part of the stormwater conveyance system, are sometimes elevated in relation to the adjacent area. Agricultural feeder canals are always elevated in relation to the adjacent area. This potentially results in the feeder canals and drains acting as impediments to the flow and causes flooding problems upstream adjacent to the canal/drain. Flat slopes result in low velocities and accumulating sediment thereby reducing system performance.
2.4 Northeast Region
The Northeast Region, shown on Figure 2-5, is north of the Central Region and east of the Franklin Mountains and has seen an increase in development in recent years. This region includes all watersheds that contribute flow to Pershing Dam. This area of the City consists of older development transitioning to newer development as it progresses northward. Most of the City dams fall within this region.
The Northeast Region is characterized by three different drainage patterns and land types: the Franklin Mountains and undeveloped and developed alluvial fan. The Northeast Region has been divided into three systems: Fort Bliss Sump System, Northeast Ponding System, and Range Dam System. The Northeast drainage features consist of 20 ponds, 14 dams, 1 pump station, and 32 miles of open channel. Runoff from the Franklin Mountains acquires large amounts of sediment and debris as it flows down the mountains and hits the undeveloped alluvial fan. Due to the generally
El Paso Water Utilities El Paso Stormwater Master Plan The City of El Paso Section 2.0 - Overview of Existing Stormwater Drainage System
Page 2-4 March 2009
steep slopes, the runoff has high velocity with an even greater erosive potential. Lack of sediment debris controls and inadequate capacity slows the water enough to drop much of the sediment within the system. This results in the existing system plugging with debris and sediment, which further limits the conveyance capacity. The existing dams reduce the amount of flow experienced by the lower urban areas. However, they are unable to control all the flow coming from the Franklin Mountains. The runoff that makes it to the urban areas is conveyed down to Pershing Dam through a series of east-west and north-south concrete-lined channels. These channels lie within fully developed regions of the City and have limited space for improvements, such as channel widening.
2.5 Northwest Region
The Northwest Region, as shown on Figure 2-6, is west of the Franklin Mountains and includes the Upper Valley. Along with the East side, the Northwest Region is one of the fastest growing areas of the City. This region also experienced most of the flood damage associated with Storm 2006. The existing stormwater features in this region include natural arroyos, man-made channels, ponds, dams, gravity drains, and pump stations.
The Northwest Region has similar characteristics to both the Northeast Region and the Mission Valley Region. The upper watershed area falls within the Franklin Mountains and leads to developed and undeveloped alluvial fans with runoff eventually arriving in the Upper Valley and the Rio Grande. The Northwest Region has been divided into six systems: Doniphan System, Flow Paths System, Keystone Dam System, Montoya Drain System, Oxidation Dam System, and Vinton System. The Northwest Region drainage features consist of 28 ponds, 5 dams, 2 pump stations, and hundreds of miles of identified conveyance networks. Similar to the Northeast Region, runoff from the Franklin Mountains acquires large amounts of sediment and debris. This debris exacerbated the damage caused during Storm 2006. The northern foothills are undeveloped and consist of active alluvial fans, whereas the southern foothills are fully developed and drainage is controlled through a series of engineered channels and detention structures. The Upper Valley contains several agricultural drains, which, like the Mission Valley Region, are part of the stormwater conveyance system. In some areas, these agricultural drains are elevated in relation to the adjacent area and act as impediments to the flow and cause flooding problems.
2.6 West Central Region
The West Central Region, shown on Figure 2-7, is at the southwest tip of the Franklin Mountains just south of the Oxidation Dam Watershed and just west of the downtown area. The University of Texas at El Paso (UTEP) falls within the West Central Region.
El Paso Water Utilities El Paso Stormwater Master Plan The City of El Paso Section 2.0 - Overview of Existing Stormwater Drainage System
Page 2-5 March 2009
This region has a significant amount of topographic relief and five main drainage paths convey flow from the mountainous terrain to the Rio Grande or the Border Canal.
The West Central Region, the smallest of all regional areas, consists of the southern tip of the Franklin Mountains and the associated foothills. Since this region is small, it has not been divided into systems. There is one identified City pond in this region. This region experiences the same sediment and debris concerns resulting from the runoff from the Franklin Mountain Range as other regions. Additionally, development has constricted and directed the natural flow paths, limiting the space available for expansion of the channels.
!!
!!
!!
!!
!!!!
!!
!!
!!
!!
! ! ! !
!!!!
!!
!!
!!!!!
!!
!!
!!
!!
!!
!!
!!
!
! ! ! !
!!
!
!
!
!!
!!
!
!!
!!
!!
!!
!!
!!!
!!!
!!
!!
!!
!!
!!
!!!
!!
!!!
!!
!!
!!
!!!!
!
!
!
!
!!!
!
!
!!
!
!!
City of El Paso
Fort Bliss Military Reservation
Franklin Mountains
City ofSocorro
El PasoCounty
HuecoTanksStatePark
Castner Range
Biggs ArmyAirfield
Town of Anthony
Ft. BlissMilitary
ReservationFranklinMts.
City of El Paso
USAMEXICO
TEXASNEW MEXICO
Horizon
El Paso County
Town ofVinton
§̈¦10
§̈¦10
£¤54
£¤62
£¤54
£¤BUS54
ST375
ST20
ST260
ST375
ST20
£¤62
Northeast
East Side
Northwest
Central
MissionValley
Northwest
WestCentral
File:
P:\G
IS_P
rojec
ts\EP
WU\
MXD\
FinalR
eport
\F21
_Mas
terPla
nReg
ionalA
reas.m
xdLegend
Master Plan Regional AreaMajor RoadRailroadState BoundaryCounty BoundaryCorporate Boundary
! ! Military Boundary! ! ! ! ! ! Park Boundary
³ 1 : 190,080 or 1 inch = 3 miles
0 31.5Miles
Master Plan RegionalStudy Areas
Figure 2-1Date: 03/05/2009
El Paso Stormwater Master Plan
!!!!!!!!!!!!!
!!
!!
!!
!!
!!
!!
!!
!!
!
!!!!!!!!!!!!!!!!!!!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
!!
!!
!!
!!
!!
! !!
!!
!!
!
!!!
!!
!!
!!!
!!
!!
!!
!!
!!
!!!
!!!!
!!
!!
!!
!!
!!
!
!!!!
!!
!
!!
!!
!!
!!
!!
!!
!
!!!
!!
!!!
!!!
!!
!!!
!!
!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!!
!!!
!!
!!!
!!
!!!
!!!
!!
!!!
!!!
!!
!!!
!!
!!!
!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!
!!
!!!!
!!!!
!!!!
!!!!
!
!!
!!
!
! !! !
!!
!!
!
!!!!!!!!!!!
!!
!!
!
!!!!
!!
!!
!!
!
!
!
!
!
!
!!
!!
!
!.
!.
!.
!.
!.!.
!.
!.
!.
!.!.
!.
!.
!.
!.
!.
Pershing Dam
McKelligon Dam
Lower Durazno
Van Buren Dam
McKelligon Reservoir B
Upper Durazno
Cotton Dallas
Dam No. 10
Dam No. 9
Scenic Dr Dam
San Diego Dam
McKelligon Reservoir C
Franklin Campbell
Dam No. 8
Cebada Reservoir
Louisiana Dr Dam_lower
McKelligon Reservoir A
Memphis Dam Lower
Cemex Spillway
Kentucky Dam Upper
Magnolia Reservoir
Fort Blvd Reservoir
Altura Ave Dam
Ohio St Reservoir
McKelligon Reservoir D
Kentucky Dam Lower
Tremont Reservoir
Louisiana Dr Dam Upper
Boone St Basin
Memphis Dam Upper
§̈¦10
§̈¦110
£¤54
£¤85
£¤62
£¤54
£¤BUS54
£¤BUS54
ST20
£¤62
§̈¦10
City of El Paso
Franklin Mountains
Fort Bliss Military Reservation
Fort Bliss MilitaryReservation
Franklin Mts.
BiggsArmy
Airfield
USA
MEXICO
ST20
Government Hills
Dallas
Cebada
Channel 108
Hills Park
El PasoPaisano
Fonseca
Border HwyOverpass
San Francisco ModestoDitch
Ramona
Airway
Cebada
Cordova
Paisano
Wyoming
Montview
Clardy Fox
Chihuahuita
File:
P:\G
IS_P
rojec
ts\EP
WU\
MXD\
FinalR
eport
\F22
_Exis
tingD
raina
geSy
stemC
E.mx
dLegend!. Pump Station
Drainage SystemDam/ReservoirMajor RoadRailroadStreamlineWater BodyState BoundaryCorporate Boundary
! ! Military Boundary! ! ! ! ! ! Park Boundary
³ 1 : 48,000 or 1 Inch = 4,000 Feet
0 4,0002,000Feet
Existing Drainage SystemsCentral Region
Figure 2-2Date: 03/05/2009
El Paso Stormwater Master Plan
!!
!!
!!
!!
!!
!!
!!
!!!!!!!!!!
!!
!!
!!
!!
!!
!!
!!
! ! ! ! ! ! ! ! ! !
!!!!!!
!!
!!
!!
!!
!!
!!!!!!!!!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
! ! ! ! ! ! ! ! !
!!
!!
!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!
!!
!!
!!
!!
!!
!
!!!
!!
!!!
!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!
!!
!!!
!!
!!!
!!!
!!
!!!
!
!!
!!
!!
!!
!!
!!
!
!!!
!!!!
!!
!!
! ! !
!!
!!!!!!
!!
!!
!!
!!
!
!
!!
!
£¤62
ST375
ST375
§̈¦10
ST20
El Paso County
City of El Paso
Fort Bliss Military Reservation
Horizon
Biggs Army Airfield
City of El Paso
Fort BlissMilitary
Reservation
MEXICO
USA
HIGH MESA
ESCARPMENT
ZONEAmericas Basin
Phelps Dodge Basin
Lomaland Basin
Jesuit Basin
Carolina Dam
Americas Ten Basin
Lafayette
Americas Ten Basin
Lomaland Basin
Phelps Dodge
AmericasBasin
Mesa DrainUpstream
Mesa DrainDownstream
CarolinaDam
File:
P:\G
IS_P
rojec
ts\EP
WU\
MXD\
FinalR
eport
\F23
_Exis
tingD
raina
geSy
stemE
A.mx
dLegend
Drainage SystemDam/ReservoirMajor RoadRailroadStreamlineWater BodyEscarpment Zone BoundaryState BoundaryCorporate Boundary
! ! Military Boundary! ! ! ! ! ! Park Boundary
³ 1 : 96,000 or 1 Inch = 8,000 Feet
0 8,0004,000Feet
Existing Drainage SystemsEast Side Region
Figure 2-3Date: 03/05/2009
El Paso Stormwater Master Plan
!!
!!
!!
!!
!!
!!
!!
!!
!!!!!!!!!!!!
!!
!!
!!
!!
!!
!!
!!
!
! ! ! ! ! ! ! ! ! ! !
!!!!!!!!
!!
!!
!!
!!
!!
!!!!!!!!!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
! ! ! ! ! ! ! ! ! !
!!
!!
!!
! !
!!
!!
!!
!!!
!!
!!
!
!!
!!
!!
!!
!!
!!!
!
!!
!!
!!
!!
!!!
!!!
!!
!!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!
!!
!!!
!!
!!!
!!
!!!
!!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!!
!!!!
!!!
!
!!
!
! !
!!
!
!!!!!!
!!
!
!!!
!!
!
!
!
!
!!
!
!.
!. !.
!.
!.
!.
!.!.
!.
!.
!.
!.
!.
!.!.
!.
!.
§̈¦10
ST20
£¤62
El Paso County
City of Socorro
Horizon
USAMEXICO
City of El Paso
MEXICO
USA
Americas Basin
Feather Lake
Phelps Dodge Basin
Lomaland Basin
Basin G
Basin ACarolina Dam
North Loop Detention Basin
ESCARPMENT
ZONEBasin G
Basin A
Mesa DrainUpstream
Mesa DrainDownstream
Phelps Dodge Basin
Carolina Dam
Americas Basin
Lomaland Basin
Americas TenBasin
Ramona
Airway
Cebada
Cordova
Basin G
Knights
Paisano
Carolina
Montview
Yarbrough
Le BarronLe Barron
Clardy Fox
Carson Elliot
Generator Room
Basin A Pump Station
File:
P:\G
IS_P
rojec
ts\EP
WU\
MXD\
FinalR
eport
\F24
_Exis
tingD
raina
geSy
stemM
V.mxd
Legend!. Pump Station
Drainage SystemDam/ReservoirMajor RoadRailroadStreamlineWater BodyEscarpment Zone BoundaryState BoundaryCorporate Boundary
! ! Military Boundary! ! ! ! ! ! Park Boundary
³ 1 : 84,000 or 1 Inch = 7,000 Feet
0 7,0003,500Feet
Existing Drainage SystemsMission Valley Region
Figure 2-4Date: 03/05/2009
El Paso Stormwater Master Plan
!!!!!!
!!
!!
!!
!!
!!
!!!!!!!!!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
! ! ! ! ! ! ! ! !
!!
!!
!
! !
!!
!!
!!
!!!
!
!!
!!!
!
!!
!!
!
!!
!!
!!
!!
!!
!
!!!
!!!
!!
!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!
!!
!!!
!!
!!!
!!!
!!
!!!
!
!!
!!
!!
!!
!!
!!
!
!!!!
!!!
!!
!!
! !!
!!
!!!!!!
!!
!!
!!
!!
!
!
!!
!
!.
Northeast Ponding
Range Dam
Northills Dam
Sunrise Dam
Mountian Park Dam
Fusselman Dam
Keltner Dam
Sunrise Basin
Northgate Dam
Range BasinAmber Basin
Hondo Pass Basin
Sunrise Basin
Fort Bliss Sump
Franklin Mountains
Castner Range
Biggs Army Airfield
Fort BlissMilitary ReservationFranklin Mountains
City ofEl Paso
City of El Paso
Fort Bliss Military Reservation
City of El Paso
TEXASNEW MEXICO
§̈¦10
£¤54
£¤62
£¤BUS54
ST375
ST20
ST375
£¤54
£¤62
ST375
Fort Bliss Sump
Northeast Ponding
Range Dam
Airway
File:
P:\G
IS_P
rojec
ts\EP
WU\
MXD\
FinalR
eport
\F25
_Exis
tingD
raina
geSy
stemN
E.mx
dLegend!. Pump Station
Drainage SystemDam/ReservoirMajor RoadRailroadRiver, Stream, CanalWater BodyState BoundaryCorporate Boundary
! ! Military Boundary! ! ! ! ! ! Park Boundary
³ 1 : 96,000 or 1 Inch = 8,000 Feet
0 8,0004,000Feet
Existing Drainage SystemsNortheast Region
Figure 2-5Date: 03/05/2009
El Paso Stormwater Master Plan
!!!!!!!!
!!
!!
!!
!!
!!
!!
!!!!!!!!!!!!!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
! ! ! ! ! ! ! ! ! ! ! !
!!
!!
!!
!
! !
!!
!
!!!
!!
!!
!!!
!
!!
!
!!!
!
!!
!!
!!
!
!!!
!!
!!
!!
!!
!!
!
!!!
!!!
!!
!!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!
!!!
!!!
!!
!!!
!!!
!!
!!!
!!!
!!
!
!!
!!
!!
!!
!!
!!
!!
!!
!
!!!!
!!!!
!!!!
!
!!
!
! ! !!
!!
!!!!!!!
!!
!
!!!
!!
!!
!
!
!
!
!!
!
!.
!.
Castner Range
Fort BlissMilitary ReservationFranklin Mountains
City of El Paso
§̈¦10
£¤54
£¤54
ST260
ST375
ST20 Mulberry Dam
Mesa Dam
Keystone Dam
Thorn Dam
Oxidation Dam
NEW MEXICOTEXAS
Montoya
Flow Paths
Keystone Dam
Vinton
Oxidation Dam
Enchanted Hills
Doniphan
Doniphan Phase I
Doniphan Phase II
File:
P:\G
IS_P
rojec
ts\EP
WU\
MXD\
FinalR
eport
\F26
_Exis
tingD
raina
geSy
stemN
W.m
xdLegend!. Pump Station
Drainage SystemDam/ReservoirMajor RoadRailroadStreamlineWater BodyState BoundaryCorporate Boundary
! ! Military Boundary! ! ! ! ! ! Park Boundary
³ 1 : 72,000 or 1 Inch = 6,000 Feet
0 6,0003,000Feet
Existing Drainage SystemsNorthwest Region
Figure 2-6Date: 03/05/2009
El Paso Stormwater Master Plan
!!!!!!!!!!!!!!!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!!!!!!!!!!!!!!!!!!!!!!!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!!
!
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
!!
!!
!!
!!
!!
!!
!!
!! !
!
!!
!!
!!
!!
!!
!!!
!!
!!
!!!
!!
!!
!!!
!!
!!
!!
!!!!
!!!
!!
!!
!!
!!
!!
!!
!!
!!
!!!!!!
!!
!
!.
§̈¦10
§̈¦110
£¤85
£¤62
£¤54
City of El Paso
Franklin Mountains
Franklin Mts.
ST20
West Central
Doniphan Phase I
File:
P:\G
IS_P
rojec
ts\EP
WU\
MXD\
FinalR
eport
\F27
_Exis
tingD
raina
geSy
stemW
C.mx
dLegend!. Pump Station
Drainage SystemMajor RoadRailroadStreamlineWater BodyState BoundaryCorporate Boundary
! ! Military Boundary! ! ! ! ! ! Park Boundary
³ 1 : 36,000 or 1 Inch = 3,000 Feet
0 3,0001,500Feet
Existing Drainage SystemsWest Central Region
Figure 2-7Date: 03/05/2009
El Paso Stormwater Master Plan
MEXICOUSA