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PLANNING AREA OVERVIEW Rio Grande Regional Water Plan

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DRAFT CHAPTER 1: PLANNING AREA OVERVIEW Rio Grande Regional Water Plan B&V PROJECT NO. 192863 . rightsAll reserved. 7 PREPARED FOR Rio Grande Regional Water Planning Group 10 JULY 2019 ©Black& Veatch Holding Company 201 Rio Grande Regional Water Planning Group | CHAPTER 1: PLANNING AREA OVERVIEW TABLE OF CONTENTS CHAPTER 1: Planning Area Overview ........................................................................................... 3 1.1. Planning Background ........................................................................................................................ 3 1.2. The Rio Grande Regional Water Planning Area ...................................................................... 5 1.2.1. Climate ............................................................................................................................. 6 1.2.2. Population and Economy ......................................................................................... 6 1.2.3. Surface Water Resources....................................................................................... 10 1.2.4. Surface Water Quality ............................................................................................. 13 1.2.5. Drought of Record .................................................................................................... 14 1.2.6. Groundwater Resources ........................................................................................ 16 1.2.7. Groundwater Quality .............................................................................................. 17 1.3. Current Water Use ........................................................................................................................... 17 1.3.1. Demands ....................................................................................................................... 17 1.3.2. Major Water Providers ........................................................................................... 18 1.3.3. Agricultural and Natural Resources ................................................................. 20 1.3.4. Threats to Agricultural and Natural Resources ........................................... 26 1.4. Existing Local and Regional Water Plans ............................................................................... 29 1.4.1. Drought Planning ...................................................................................................... 29 1.4.2. Existing Regional Water Plans ............................................................................ 31 1.4.3. Public Water Supply Systems .............................................................................. 33 LIST OF TABLES Table 1-1 Region M Water Planning Group ................................................................................ 3 Table 1-2 Median Household Income, Poverty, and Unemployment Rate, by County ................................................................................................................................. 10 Table 1-3 Firm Yield Projections, Amistad-Falcon Reservoir System 2020- 2070 (Acre-feet/year) ................................................................................................. 15 Table 1-4 Region M Major Water Providers ............................................................................ 18 Table 1-5 Federally Threatened and Endangered Species in Region M ..................... 25 Table 1-6 Local Water Plans Filed with TCEQ ........................................................................ 29 Table 1-7 Summary of Region M Water Loss Audit Data, 2010 (million gallons, %) ........................................................................................................................ 33 BLACK & VEATCH | Error! No text of specified style in document. i CHAPTER 1: PLANNING AREA OVERVIEW | Rio Grande Regional Water Planning Group LIST OF FIGURES Figure 1-1 Rio Grande Regional Planning Area (Region M) .................................................. 5 Figure 1-2 Region M Historical Populations, US Census Bureau ......................................... 6 Figure 1-3 Major Metropolitan Areas of Region M .................................................................... 7 Figure 1-4 Pre-Tax Gross Farm Income by County, USDA 2017 Agriculture Census .................................................................................................................................... 8 Figure 1-5 Direct County Travel Spending ($ Millions) ............................................................ 9 Figure 1-6 Hydrologic Map of the Arroyo Colorado showing floodway systems (Arroyo Colorado Watershed Protection Plan, 2017 Update) ............................................................................................................................... 11 Figure 1-7 River Basin in Region M .............................................................................................. 12 Figure 1-8 Reservoir Storage for the Amistad-Falcon System, US and Combined .......................................................................................................................... 15 Figure 1-9 Major and Minor Aquifers in Region M ................................................................. 16 Figure 1-10 Water Demand Projections for Each WUG Type in Region M (Acre-feet/year) ............................................................................................................. 17 Figure 1-11 Region M Land Use Map ......................................................................................... 20 Figure 1-12 Deliveries from Mexico under 1944 Treaty (IBWC) .................................. 27 ii JULY 2019 Rio Grande Regional Water Planning Group | CHAPTER 1: PLANNING AREA OVERVIEW CHAPTER 1: PLANNING AREA OVERVIEW 1.1. PLANNING BACKGROUND The Texas Water Development Board (TWDB) was established in 1957 through a state constitutional amendment and is charged with preparing a comprehensive and flexible long-term plan for the development, conservation, and management of the state’s water resources. Historically, the State Water Plan had been prepared by the TWDB with input from other state and local agencies and the public. Senate Bill 1 (SB1) was enacted in 1997 by the 75 th Legislature, which established a “bottom up” approach whereby State Water Plans are based on Regional Water Plans prepared and adopted by the 16 appointed Regional Water Planning Groups (RWPGs). SB1 states that the purpose of regional water planning is to: “Provide for the orderly development, management, and conservation of water resources and preparation for and response to drought conditions in order that sufficient water will be available at a reasonable cost to ensure public health, safety, and welfare; further economic development; and protect the agricultural and natural resources of that particular region.” SB1 also provides that future regulatory and financing decisions of the Texas Commission on Environmental Quality (TCEQ) and the TWDB be consistent with the current State Water Plan (SWP). In 2013 House Bill 4 (HB4) was enacted, which lends greater weight to the SWP by committing an additional funding pool to the implementation of projects recommended in the plan by way of the State Water Implementation Fund for Texas (SWIFT). The TWDB is the state agency designated to oversee the planning effort, with Mr. William Alfaro currently serving as the Project Manager for Region M. The Rio Grande Regional Water Planning Group (Region M) members, listed in Table 1-1, act as the decision-making body for the regional water planning effort. The Lower Rio Grande Development Council (LRGVDC) serves as the political subdivision to administer the Regional Water Planning Grant, and Black and Veatch Corporation was selected as the prime consultant for the planning and engineering tasks required for development of the Regional Water Plan. Table 1-1 Region M Water Planning Group INTEREST NAME RESIDENT COUNTY Thomas Rodriguez * Public Webb Laredo Joe Rathmell Zapata County Judge, Zapata Counties David L. Fuentes Hidalgo Precinct 1 Commissioner, Weslaco Jorge Flores Maverick Municipalities Eagle Pass Water Works, Eagle Pass John Bruciak Cameron BLACK & VEATCH | Planning Background 3 CHAPTER 1: PLANNING AREA OVERVIEW | Rio Grande Regional Water Planning Group INTEREST NAME RESIDENT COUNTY Brownsville PUB, Brownsville Riazul Mia Webb City of Laredo Donald K. McGhee * Industries Cameron Hydro Systems, Inc., Harlingen Neal Wilkins, Ph.D. Jim Hogg East Wildlife Foundation Agriculture Dale Murden Hidalgo Texas Citrus Mutual, Mission Jaime Flores Environmental Hidalgo The Arroyo Colorado Watershed Carlos Garza Hidalgo AEC Engineering, LLC, Edinburg Small Business Nick Benavides * Webb Nick Benavides Co. Electric Generating Utilities VACANT VACANT Mayor James Darling River Authorities Hidalgo Rio Grande Regional Water Authority Sonny Hinojosa * Hidalgo HCID No. 2, San Juan Water Districts Tom McLemore Cameron Harlingen Irrigation District Dennis Goldsberry Water Utilities Hidalgo North Alamo Water Supply Corporation Groundwater Management Armando Vela Hidalgo Area Red Sands GCD Frank Schuster * Hidalgo Val Verde Vegetable Co. Other Glenn Jarvis Hidalgo Attorney, McAllen *Executive Committee Member The Regional Water Plans (RWP) are updated every five years and used as a part of the update to the State Water Plan (SWP). The RWP are based on an assessment of future water demands and currently available water supply, and
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