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SARA EATMAN

2021 REGIONAL WATER PLAN

AGENDA7.A Status Reports on TWDB Contract Activities1. Schedule and Status Updates

2. Executive Summary

3. RWP Chapters:Chapter 5: Water Management Strategies

Chapter 6: Impacts of Plan

Chapter 8: Unique Sites and Policy Recommendations

Chapter 9: Infrastructure Planning

Chapter 10: Public Participation

Chapter 11: Implementation and Comparison to Previous Plan

4. Discussion and ACTION to Adopt and Certify as Complete the Region M 2021 IPP

5. Discussion and ACTION to Authorize B&V to Make Non-substantive Revisions and Any Revisions Requested by the RGRWPG

6. Discussion and ACTION to Authorize Black & Veatch to Submit the IPP to the TWDB on Behalf of Region M

7. Discussion and ACTION to Schedule Public Hearing(s) for IPP

8. Discussion and ACTION to Authorize LRGVDC to Post IPP

Public Hearings Notice2

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7.A.1.SCHEDULE AND STATUS UPDATES

IPP is a DRAFT; Revisions and corrections will be made between now and FINAL, due 10/14/2020

SCHEDULE

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Chapter (posting date)Meeting Presented

1: Planning Area Description (8/1/19)2: Demand Analysis(8/1/19)

7/17/19

3: Supply Analysis (9/7/19)4: Needs Analysis (9/7/19)7: Drought Response (1/27/19)

9/4/19

5: Water Management Strategies (Approach & Overview) 12/18/19

5: Water Management Strategies (2/1-2/4/20)6: Impacts of Plan (2/3/20)8: Policy Recommendations (1/31/20)9: Infrastructure Planning (1/27/19)10: Public Participation (1/27/19)11: Implementation and Comparison to Prev. Plan (2/3/20)

2/5/20

8/19

9/19

10/19

11/19

12/19

1/20

2/20

3/20

4/20

5/20

6/20

7/20

8/20

9/20

10/20

IPP Due 3/3/20

RWP Due 10/14/20

7.A.2.EXECUTIVE SUMMARY

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• ES.1 Water Planning in Texas• ES.2 The Rio Grande Regional Water Planning Area

• ES.2.1 Population, Economy, and Natural Resources• ES.2.2 Surface Water Resources• ES.2.3 Groundwater Resources

• ES.3 Current and Projected Water Use• ES.3.1 Wholesale Water Providers• ES.3.2 Municipal Demands• ES.3.3 Irrigation Demands• ES.3.4 Industrial Demands• ES.3.5 Source Balance

• ES.4 Water Management Strategies• ES.4.1 Water Infrastructure and Distribution Systems, Assumptions and Methodology • ES.4.2 Wastewater Reuse• ES.4.3 Aquifer Storage and Recovery• ES.4.4 Desalination• ES.4.5 Fresh Groundwater• ES.4.6 Advanced Municipal Conservation• ES.4.7 On-Farm Conservation• ES.4.8 Implementation of Best Management Practices for Industrial Users• ES.4.9 Conversion/Purchase of Surface Water Rights

• ES.5 Drought Planning & Threats to Resources• ES.5.1 Threats to Agricultural and Natural Resources

EXECUTIVE SUMMARY

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EXECUTIVE SUMMARY: DESCRIPTION OF THE PLANNING AREA & WATER RESOURCES

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Summarizing Chapter 1 & Chapter 2

EXECUTIVE SUMMARY:COMPARISON OF SUPPLIES AND DEMANDS

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Summary of Chapter 3 and Chapter 4

Summary of Chapter 5

Specific/Submitted WMS:

• Municipal Water Infrastructure & Distribution Systems

• Advanced Municipal Conservation (metering projects)

• Brackish Groundwater Desalination (expanded and new)

• Fresh Groundwater Wells

• Reuse (Potable & Non-Potable)

• Bio Control of Arundo Donax

• ASR

Generalized WMS:

• Advanced Municipal Conservation

• Municipal Drought Management

• Irrigation District Improvements

• Industrial Best Management Practices

• Steam-Electric• Manufacturing• Mining

• Conversion of Water Rights via Urbanization

• On-Farm Conservation

EXECUTIVE SUMMARY:WATER MANAGEMENT STRATEGIES

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10 February 2020

Summary of Chapter 7 & Chapter 8

• Recommendations for Drought Management Plans and Water Conservation Plans

• Discussion of regional concerns

• Urbanization

• Deliveries from Mexico

• Groundwater Pumping affecting springflows

DROUGHT PLANNING & THREATS TO RESOURCES

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7.A.3.aRWP CHAPTERSCHAPTER 5: WATER MANAGEMENT STRATEGIES

CHAPTER 6: IMPACTS OF PLAN

CHAPTER 8: UNIQUE SITES AND POLICY RECOMMENDATIONSCHAPTER 9: INFRASTRUCTURE PLANNINGCHAPTER 10: PUBLIC PARTICIPATIONCHAPTER 11: IMPLEMENTATION AND COMPARISON TO PREVIOUS PLAN

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7.A.3.aRWP CHAPTERS

CHAPTER 5: WATER MANAGEMENT STRATEGIES

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CHAPTER 5: WATER MANAGEMENT STRATEGIES

1. Water Infrastructure and Distribution1. Irrigation District Improvements

2. Municipal Infrastructure Improvements2. Wastewater Reuse

3. Desalination1. Brackish Groundwater2. Seawater Desalination

4. Fresh Groundwater5. Advanced Municipal Conservation6. Municipal Drought Management

7. Implementation of Best Management Practices8. Conversion of Surface Water via Urbanization9. On-Farm Irrigation Conservation10. Brush Control11. Aquifer Storage & Recovery

13Grey WMS have been presented in previous meetings

WATER INFRASTRUCTURE AND DISTRIBUTION: RECOMMENDED MUNICIPAL INFRASTRUCTURE IMPROVEMENTS

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5 February 2020

East Rio Hondo WSC FM 2925 Transmission Line

East Rio Hondo WSC Harlingen Waterworks Interconnect

El Jardin WSC Upgrade Existing Distribution System

McAllen Raw Water Line Project

Rio Hondo Emergency Interconnect

Union WSC Water Line Replacement and Meter Reading System

Brownsville Public Utilities Board Banco Morales Reservoir

Brownsville Public Utilities Board Resaca Restoration

Hidalgo County Drainage District No. 1 Delta Watershed and Reclation project

Donna New Raw Water Reservoir and Raw Water Pump Station

East Rio Hondo WSC Municipal UV Disinfection for FM 510 WTP

East Rio Hondo WSC Inter Basin Transfer of Surface Water and WTP

North Alamo WSC Expansion of Delta WTP (4MGD)

Roma Regional Water Treatment plant

San Juan WTP No. 1 Upgrade and Expansion & Urbanized Water Rights

WATER INFRASTRUCTURE AND DISTRIBUTION: ALTERNATIVE MUNICIPAL INFRASTRUCTURE IMPROVEMENTS

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5 February 2020

Brownsville Public Utilities Board Brownsville Matamoros Weir and Reservoir

East Rio Hondo WSC Bean Road Transmission Line

East Rio Hondo WSC Inter Basin Transfer of Surface Water and WTP

Donna New Raw Water Reservoir and Raw Water Pump Station

Elsa WTP Expansion and Interconnect to Engleman ID

Sharyland WSC Reservoir at WTP #1 for Additional Storage Capacit

Weslaco Emergency Transfers of Surface Water or Interconnects Between systems

San Juan Raw Water Reservoir Improvements

Laredo Expansion of El Pico WTP

North Alamo WSC 1 MG Water Tower, Edinburg/Pharr

North Alamo WSC 1 MG Water Tower, Mid Valley

North Alamo WSC Plant No. 5, 16 inch Waterline Expansion

North Alamo WSC Expansion of Water Treatment Plant No. 5

DESALINATION: BRACKISH GROUNDWATER

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East Rio Hondo WSC North Cameron Regional WTP Wellfield Expansion Alternative

North Alamo WSC North Cameron Regional WTP Wellfield Expansion Alternative

Agua SUD New Brackish Water Treatment Plant Alternative

Alamo New Brackish Groundwater Desalintion Plant Recommended

Lyford New Brackish Well and Water Treatment Plant Recommended

McAllen New Brackish Water Treatment Plant Recommended

Mission New Brackish Water Treatment Plant Recommended

San Juan WTP No. 1 Upgrade and Expansion to include BGD Recommended

Sharyland WSC

Water Treatment Plant No. 2 Brackish Groundwater Desalination Recommended

Sharyland WSC

Water Treatment Plant No. 3 Brackish Groundwater Desalination Recommended

DESALINATION:SEAWATER DESALINATION

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Brownsville Public Utilities BoardSeawater Desalination Demonstration -Build-Out

Alternative

Brownsville Public Utilities BoardSeawater Desalination Implementation -Pilot

Alternative

RGRWA Regional Facility Project - Seawater Desal Alternative

Laguna Madre Water District Seawater Desalination Recommended

FRESH GROUNDWATER

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Fresh groundwater development recommended when requested, based on availability

County-Other, Starr Additional Groundwater Wells Recommended

County-Other, Webb Additional Groundwater Wells Recommended

EdcouchNew Groundwater Supply

Recommended

IrrigationAdditional Groundwater Wells

Recommended

Zapata County Waterworks New Groundwater Supply Recommended

Rio HondoGroundwater Well

Alternative

• 10% Reduction in Demand Applied for all Industrial WUGs:

• Mining

• Manufacturing

• Steam-Electric

◼ Conservation Analysis and Planning ● Cost Effectiveness Analysis

● Industrial Site Specific Conservation

● Industrial Water Audit

◼ Educational Practices ● Management and Employee Programs

◼ System Operations ● Boiler and Stream Systems

● Industrial Alternative Sources and Reuse of Process Water

● Industrial Sub-metering

● Industrial Water Waste Reduction

● Refrigeration

● Rinsing/Cleaning

● Water Treatment

◼ Cooling Systems Management ● Cooling Systems (Other than Cooling Towers)

● Cooling Towers

● Once-Through Cooling

◼ Landscaping ● Industrial Facility Landscaping

IMPLEMENTATION OF BEST MANAGEMENT PRACTICES

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Historical Urbanization Rate used to estimate reduced supplies to Ag & conversion to Municipal

CONVERSION OF SURFACE WATER VIA URBANIZATION

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Agua SUDAlamoCounty-Other, CameronCounty-Other, HidalgoCounty-Other, MaverickCounty-Other, StarrCounty-Other, WebbCounty-Other, ZapataDonnaEagle PassEast Rio Hondo WSC

EdinburgEl Jardin WSCEl Sauz WSCEl Tanque WSCElsaHarlingen WaterworksHidalgoHidalgo County MUD 1La GrullaLa JoyaLa VillaLaguna Madre Water District

LaredoMcAllenMercedesMilitary Highway WSCMirando City WSCMissionNorth Alamo WSCOlmito WSCPharrPort Mansfield PUDPrimeraRio Grande CityRio WSCSan Benito

San JuanSebastian MUDSharyland WSCSiesta Shores WCIDUnion WSCWebb CountyWeslaco

CHAPTER 6: IMPACTS OF PLAN

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6.1 Impacts of Water Management Strategies

6.2 Protection of Resources

6.3 Unmet Needs

6.4 Socioeconomic Impacts of Shortages

IMPACTS ON IRRIGATED ACREAGE

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Reduction in irrigation is projected to result in increased municipal water

CUMULATIVE TOTAL

REDUCTION IN IRRIGATED

ACREAGE 2020 2030 2040 2050 2060 2070

Cameron 6,916 13,833 20,750 27,666 34,583 41,235

Hidalgo 10,250 20,500 30,750 40,999 51,250 61,108

Maverick 1,961 3,922 5,882 7,843 9,804 11,690

Starr 153 305 458 610 763 909

Webb 307 614 921 1,227 1,534 1,829

Willacy 2,350 4,699 7,049 9,399 11,748 14,008

Zapata 79 159 238 318 397 474

UNMET NEEDS

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Based on high demands and most severe historical drought; not a typical year

IRRIGATION 2020 2030 2040 2050 2060 2070

Cameron County -342,178 -323,017 -303,853 -284,693 -265,532 -246,373

Hidalgo County -377,529 -349,151 -320,794 -292,786 -264,093 -235,747

Maverick County -10,649 -7,976 -5,303 -2,631 40 2,711

Starr County -19,075 -18,310 -17,544 -16,779 -16,013 -15,248

Willacy County -77,154 -78,984 -78,984 -78,984 -78,984 -78,984

Zapata County -2,923 -2,759 -2,691 -2,433 -2,270 -2,106

Total Unmet Need -829,508 -780,197 -729,169 -678,306 -626,892 -578,458

OTHER NON-MUNICIPAL WUGS 2020 2030 2040 2050 2060 2070

Manufacturing, Cameron County -832 -1,011 -1,010 -1,010 -1,010 -1,009

Mining, Hidalgo County -627 -1,325 -1,846 -2,405 -3,047 -3,860

Mining, Maverick County -395 -1,069 -1,247 -679 -114 297

Mining, Starr County -238 -351 -422 -496 -589 -706

Mining, Webb County -3,780 -1,700 131 1,882 3,948 4,399

Mining, Willacy County -44 -46 -14 -5 4 9

Steam-Electric, Cameron County -3,054 -3,054 -3,054 -3,054 -3,054 -3,055

Steam-Electric, Hidalgo County -638 -449 -349 -349 -349 -349

CHAPTER 8: UNIQUE SITES AND POLICY RECOMMENDATIONS

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8.1 Designation of Ecologically Unique Stream Segments

6.2 Reservoir Sites

6.3 Legislative Recommendations

• Committee met 1/31/2020

• No designation of Unique Stream Segments and Unique Reservoir Sites (no change)

• Revision of some policy recommendations, highlights:

• Appropriate delivery credit for Mexico

• Definition of “extreme drought” in 1944 Treaty

• Pecos & Devils Watershed Pumping

• Watermaster program fee assessment and budgeting rules

• Support funding for ongoing water availability/quality studies

CHAPTER 8: UNIQUE SITES AND POLICY RECOMMENDATIONS

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CHAPTER 9: INFRASTRUCTURE PLANNING

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Placeholder for Infrastructure Financing Report

CHAPTER 10: PUBLIC PARTICIPATION

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10.1 Public Participation

10.2 Facilitation of the Regional Water Planning Process

10.3 Plan Implementation Issues

CHAPTER 11: IMPLEMENTATION AND COMPARISON TO PREVIOUS PLAN

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11.1 Introduction

11.2 Demands

11.3 Availability and Supplies

11.4 Water Management Strategies

11.5 Drought Response

MAG COMPARISON: AVAILABILITY FROM 2011, 2016, AND 2021 PLANS

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Limited groundwater availability; working with GMA 16 & GMA 13 to make data available

COMPARISON OF POPULATION AND MUNICIPAL DEMAND ESTIMATES

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No change in population projections from 2016, based on 2010 Census; Small change in demand

COMPARISON OF IRRIGATION, STEAM-ELECTRIC, MINING, AND MANUFACTURING DEMAND

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• Extensive effort to gather WMS information and updates from WUGs

• Implementation survey will continue to be updated between now & final Plan (per TWDB guidance)

WMS: IMPLEMENTATION SURVEY

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CATEGORY

NUMBER OF RECOMMENDED

WMS

2021 RWP

2016 RWP

Acquisition of Water Rights 44 29

Brackish Groundwater 6 18

Brush Control 10 10

Municipal Distribution & Transmission

6 7

Fresh Groundwater 5 6

Industrial Conservation 24 24

Irrigation District Improvements

54 27

Municipal Conservation 63 72

Reuse 14 14

Seawater Desalination 2 0

Storage 3 4

Supply from Other Entity WMS

0 19

Surface Water Treatment 6 7

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4. Discussion and ACTION to Adopt and Certify as Complete the Region M 2021 IPP

5. Discussion and ACTION to Authorize B&V to Make Non-substantive Revisions and Any Revisions Requested by the RGRWPG

6. Discussion and ACTION to Authorize Black & Veatch to Submit the IPP to the TWDB on Behalf of Region M

7. Discussion and ACTION to Schedule Public Hearing(s) for IPP

8. Discussion and ACTION to Authorize LRGVDC to Post IPP

Public Hearings Notice

6.A.

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EARLIEST: 3/7/20

Complete7/1/20

EARLIEST: 5/6/20

EARLIEST: 6/5/20

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