Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and...
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![Page 1: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/1.jpg)
Impacts of Salinity on El Paso’s Surface Water Supply
presented at the Annual Salinity Management and Desalination
Summit
December 8, 2003
Michael P. Fahy Planning and Development Manager
![Page 2: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/2.jpg)
Colorado
New Mexico
Texas
United States
Mexico
Taos
Santa Fe
Albuquerque
Socorro
Las Cruces
El PasoJuarez
Ft. Quitman
Rio
Gran
deTexas
Colorado
New Mexico
![Page 3: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/3.jpg)
![Page 4: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/4.jpg)
Rio Grande Project
• Bureau of Reclamation Project (1916)
• Extends from Elephant Butte Lake in New Mexico to Fort Quitman in Texas
• 90,500 irrigated acres in New Mexico
• Originally 69,010 irrigated areas in Texas
• During full allocation years, Bureau delivers 931,841 AF at canal headings with Reservoir release of 790,000 AF
![Page 5: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/5.jpg)
Rio Grande Project (con’t)
• Encroachment by urbanization in both states
• Complex systems of diversion dams, canals, laterals and agricultural drains
• Agricultural and municipal releases are made from March through September during full allotment years, shorter period during droughts
![Page 6: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/6.jpg)
Elephant Butte Reservoir
Average Elev.
Spillway Elev.
![Page 7: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/7.jpg)
History of Agricultural Drains
• Project was originally constructed without drains
• Drains were constructed in the 1930’s to improve drainage, mitigate saturated soil conditions, and generally improve crop production
• Excavated between fields, 8 to 12 feet deep, variable width depending on flow capacity
• All drains eventually discharge back into the river
![Page 8: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/8.jpg)
Del Rio Drain
East Drain
Picacho Drain
La Mesa Drain
Montoya Drain
Rio Grande Project
Major Drains in Mesilla Valley
River Points of Entry
New Mexico
Texas
![Page 9: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/9.jpg)
Rio G
rande
Anthony
Franklin Mts.
McC
ombs
Canutillo
NEW MEXICO
TEXAS
Vinton
Railr
oad
Dr.
Dyer
St.
Transmountain
Doniphan
USA
MEXICO
Ciudad Juarez
Montana
Yar
brou
gh
Zara
gosa
Airport
America
s A
ve.
Alameda
Fort Bliss
Military Reservation
Sunlan
d Par
k
Mesa Dr.
Rio G
rande
N
Water System
Robertson/Umbenhauer Water Treatment Plant
Nor
th-S
outh
Fre
eway
Jonathan Rogers Water Treatment Plant
Elephant Butte
![Page 10: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/10.jpg)
Source - Rio Grande Conveyance System
Water Management and Source Water Protection Study Part 1
Data Evaluation Report
Boyle Engineering Corporation / Parsons Engineering Croporation, Inc. March 1997
0
200
400
600
800
1000
1200
1400
TDS
(mg/
L)
Irrigation Non-Irrigation Yearly
Average of Intermittent TDS, Period - 1981 to 1984Irrigation Season, Non-Irrigation Season, Yearly
Rio Grande Below Caballo Reservoir
Rio Grande Below Leasburg Dam
Rio Grande Below Mesilla Dam
Rio Grande at El Paso
![Page 11: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/11.jpg)
0200400600800
10001200140016001800
TDS
(mg/
L)
Irrigation Season Non-irrigation Season
Rio Grande Project Major Drains Average of Intermittent TDS, Period - 1981 to 1984
Del Rio DrainLa Mesa DrainEast DrainMontoya Drain
Note: Average Individual Annual Drain Flows Range from 25 to 65 cfs
![Page 12: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/12.jpg)
Rio Grande Average Monthly TDS Concentrations at American Diversion Dam Under Current Conditions
0
200
400
600
800
1000
1200
1400
1600
Jan96.7%
Feb80%
Mar6.7%
Apr3.3%
May10%
Jun6.7%
Jul6.7%
Aug13.3 %
Sep40%
Oct90%
Nov96.7%
Dec96.7%
Month % Exceedance
TDS
(mg/
L)
1461
1313
744784
836786 819 844
1005
1302
1459 1461
TDS Limit
Ref: Boyle-Parsons Drain Mitigation Report to the NM-TX Water Commission (1998)
![Page 13: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/13.jpg)
0
50
100
150
200
250
300
350
400
450
500
Jan96.7%
Feb86.7%
Mar10%
Apr10%
May20%
Jun6.7%
Jul16.7%
Aug23.3 %
Sep66.7%
Oct93.3%
Nov96.7%
Dec96.7%
Sulfate Limit
Rio Grande Average Monthly Sulfate Concentrations at American Diversion Dam Under Current Conditions
Month % Exceedance
Sulfa
te (m
g/L)
478
430
245260
277260 271 279
331
427
478 478
Ref: Boyle-Parsons Drain Mitigation Report to the NM-TX Water Commission (1998)
![Page 14: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/14.jpg)
El Paso’s Current Methods for Planning and Operation of Two Water Treatment Plants
• Routine monitoring of water quality at canal diversions
• Plants are shut down when sulfates near 300 ppm or TDS approaches 1000 ppm
• Routine flow monitoring at upstream gauging stations
• Regular communications with irrigation districts and Bureau of Reclamation regarding release orders and water quality
![Page 15: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/15.jpg)
El Paso’s Current Methods for Planning and Operation of Two Water Treatment Plants (con’t)
• Conductivity meters have been installed in the Rio Grande and within four drains at the state line
• Intent is to provide continuous, “real-time” water quality monitoring with approx. 1-day lead time to El Paso
• EPWU provides financial support for the newly formed Paso del Norte Watershed Council with established goal of improving river water quality
![Page 16: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/16.jpg)
El Paso’s Current Methods for Planning and Operation of Two Water Treatment Plants (con’t)
East Drain
West Drain
Rio Grande @ Anthony Bridge
Newmexas DrainAnthony Drain
EPWU/EBIDConductivity Probes
![Page 17: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/17.jpg)
Potential Longer-Term Techniques for Managing Salinity
Studies conducted as part of the Regional Sustainable Water Projects of the NM-TX Water Commission:
• Retire agricultural land/manage saline lands
• Treat drain flows
• Dilute drain flows with ground water
![Page 18: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/18.jpg)
Potential Longer-Term Techniques for Managing Salinity (con’t)
• Impound and release drain flows
• Relocate point of discharge for critical drains
• Relocate water plant diversion locations
• Costs for some of these alternatives range from $1.0 million to more than $15.0 million
• Most require approval by agencies with jurisdictional authority
![Page 19: Impacts of Salinity on El Pasos Surface Water Supply presented at the Annual Salinity Management and Desalination Summit December 8, 2003 Michael P. Fahy.](https://reader036.fdocuments.net/reader036/viewer/2022062306/5a4d1b6b7f8b9ab0599b3508/html5/thumbnails/19.jpg)
Questions ?