Hickory UWCD No. 1

Management Plan: 2003 - 2008

TABLE OF CONTENTS

DISTRICT MISSION

TIME PERIOD

HISTORY

REGIONAL COOPERATION AND COORDINATION

LOCATION AND EXTENT

POPULATION AND GROWTH CHART

STATEMENT AND GUIDING PRINCIPLES

TOPOGRAPHY

GROUNDWATER RESOURCES OF THE HICKORY AQUIFER

--RECHARGE

--STORAGE

EDWARDS-TRINITY AQUIFER

--RECHARGE

--STORAGE

ELLENBURGER-SAN SABA AQUIFER

--RECHARGE

--STORAGE

MARBLE FALLS AQUIFER

--RECHARGE AND STORAGE

SURFACE WATER RESOURCES OF THE HICKORY UWCD

TOTAL PROJECTED SUPPLY OF WATER IN THE DISTRICT

NATURAL OR ARTIFICIAL RECHARGE

GROUNDWATER USED IN THE HICKORY UWCD

POTENTIAL DEMANDS AND AQUIFER SUPPLY CAPABILITY ISSUES AND SOLUTIONS

SUPPLY AND DEMAND TABLE (IN ACREFEET)

TRACKING METHODOLOGY

GOALS

1.0 ENCOURAGE EFFICIENT USE

2.0 CONTROL AND PREVENT WASTE

3.0 DEVELOP WATER QUALITY/MONITORING NETWORK

4.0 ADDRESS CONJUNCTIVE SURFACE WATER ISSUES

5.0 MONITOR DROUGHT CONDITIONS

6.0 PROVIDE AND DISTRIBUTE WATER CONSERVATION LITERATURE

Bibliography/Sources

District Mission

The Hickory Underground Water Conservation District No. 1 strives to conserve, preserve, prevent waste, protect, and recharge the underground waters of all aquifers within the legal boundaries, as far as practicable to minimize the draw-down of the water table and the reduction of artesian pressure within the District Boundaries.
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Time Period

This amended plan becomes effective upon re-certification by the Board of Directors and remains in effect until an amended plan is certified or Sept. 1, 2008, whichever is later. The plan may be revised at anytime, or after five years when the plan will be reviewed, revised or amended and is certified to be administratively complete by the Texas Water Development Board.

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History

The need for a local Underground Water Conservation District to properly manage water from the Hickory Aquifer in Central Texas was first identified in the early
1970's. At the request of area citizens, the Texas Water Development Board delineated a subdivision of the Hickory Underground Water Reservoir in 1975 in Concho, Kimble, Llano, Mason, McCulloch, Menard and San Saba Counties. In November 1981, a petition was submitted to the Texas Water Commission calling for the creation of the Hickory Underground Water Conservation District No. 1 (District). A hearing was scheduled for June 9, 1982, before the Texas Water Commission to consider the sufficiency of the petition and determine whether such a District should be created. At the conclusion of the hearing, a petition was granted and the District was created. This petition states:
That on the 29th day of December, 1975, pursuant to Notice and Hearing as required by law, Texas Water Rights Commission duly entered its order designating and defining a subdivision of the underground water reservoir in the Hickory formation in Kimble, Menard, Mason, San Saba, Concho, McCulloch, and Llano Counties, Texas, said subdivision being designated the "Hickory Aquifer Underground Reservoir."

According to statutory provision, a confirmation election was on August 14, 1982. The results of the election were: 1116 in favor of the confirmation of the District; 68 opposed; therefore, the District was officially established with a 94% approval of area voters.
Today the Hickory Underground Water Conservation District is responsible for the management of all ground waters within the District boundaries.
On August 12, 1999 the petition of creation was amended by the TNRCC/TCEQ to include all aquifers within the legal boundaries of the District.
On January 11, 2003, landowners of Mason County petitioned the District to annex the remainder of Mason County not currently in the District.
On May 03, 2003 a special election was held at the Mason County Courthouse. The election results were: 422 in favor of the annexation; 48 opposed; therefore the remainder of Mason County was annexed into the District by a 88% approval of the voters.(top)

Regional Cooperation and Coordination

The District was divided by the regional planning process. San Saba County is in the Lower Colorado Regional Water Planning Group (Region K) and the remaining five counties, Concho, Kimble, Mason, McCulloch and Menard are located in Region F. Regional planning activities involve an area of 46 counties, stretching from Matagorda Bay to the Pecos River in West Texas.
The District is a member of the West Texas Regional Groundwater Alliance. The regional alliance consists of twelve (12) locally created and locally funded districts that encompass almost eight and three quarter (8.75) million acres or thirteen (13) thousand square miles of West Texas. This West Texas region is as diverse as the State of Texas. Due to the diversity of this region, each member district provides its own unique programs to best serve its constituents.
In 1988, four (4) groundwater districts; Coke County UWCD, Glasscock County UWCD, Irion County WCD, and Sterling County UWCD signed the original Cooperative Agreement. In the fall of 1996, the original Cooperative Agreement was redrafted and the West Texas Regional Groundwater Alliance was created. The current member districts are:

This Alliance was created because the local districts have a common objective to facilitate the conservation, preservation, and beneficial use of water and related sources. Local districts monitor the water-related activities of the farming and ranching, oil and gas, industrial entities and municipalities. The alliance provides coordination essential to the activities of these member districts as they monitor these activities in order to accomplish their objectives.(top)

Location and Extent

The Hickory Underground Water Conservation District No. 1 is located near the geographical center of Texas. The District is comprised of approximately 1,683,080 acres, including portions of: McCulloch, Menard, Kimble, San Saba, Concho counties and the entirety of Mason county.
Prior to the May 3, 2003 Mason Annexation Election; the District was comprised of 1,250,000 acres. With the annexation of Mason County, the District gained approximately 433,000 acres in that area.

The District's economy is based to a large degree on agriculture; 12% of the acreage in the District is cropland. Counties within the District have grown substantially since 1990 (see figure Population Growth and Economy). Principal municipalities in or near the district boundaries are Brady, San Saba, Mason and Eden.(top)

Population Growth and Economy1

Statement of Guiding Principles

The Hickory Underground Water Conservation District No. 1 (District) is created and organized under the terms and provisions of Article XVI, Section 59, of the Constitution of Texas and Chapter 36 (formerly Chapter 52) of the Texas Water Code, Vernon's Texas Civil Statutes, and the Districts actions are authorized by, and consistent with this constitutional and statutory provision, including all amendments and additions. The District is created for the purpose of conserving, preserving, recharging, controlling subsidence, protecting and preventing waste and as far as practicable to minimize the drawdown of the water table and the reduction of artesian pressure of all Aquifers within the district boundaries. In order to carry out its constitutional and statutory purposes, the District has all the powers authorized by Article XVI, Section 59, of the Texas Constitution, and Chapter 36 of the Texas Water Code, Vernon's Texas Civil Statutes, together with all amendments and additions.
The District's purposes and powers are implemented through promulgation and enforcement of the District's regulations. These regulations are adopted and revised under the authority of Subchapter E, Chapter 36, Texas Water Code, and are incorporated herein as a part of the District's management plan.
The District's Board of Directors is made up of five members representing the various districts. Current Directors are W. Owen Parks (President), Bill Sloan (Vice-President), Bert C. Striegler (Secretary), Jim Quinn and Larry Lehmberg.(top)

Topography

The District is within the Colorado River basin and is bisected by the Llano and San Saba Rivers, as well as numerous other creeks. Drainage is typically from west to east.
The District contains two major geologic features. The Llano Uplift (Central Basin) is in the eastern and southern portions of the District. This feature is made up of very old rocks ranging in age from 1.0 to 1.2 billion years old and comprises granite and older metamorphic rocks. The northern and western parts of the District are in the Edwards Plateau region and are made up of Cretaceous Age limestone, dolomite, and marble.
The District elevation ranges from 1,100 to 2,300 feet above sea level.(top)

Groundwater Resources of the Hickory Aquifer

This partition of the Hickory Aquifer is the primary source of groundwater for the area. Water from the Hickory is used for irrigation, public water supply, industrial, stock, and the domestic needs of the people and entities served.

The Hickory Aquifer occurs in parts of the counties in the Llano uplift region of Central Texas. Discontinuous outcrops of the Hickory Sandstone overlie or flank exposed Precambrian rocks that form the central core of the uplift. The down dip artesian portion of the aquifer encircles the uplift and extends to maximum depths approaching 4000 ft. Most of the water pumped from the aquifer is used for irrigation. The largest capacity wells, however, have been completed for municipal water supply and industrial purposes in the Mason, Eden and Brady area.
The Hickory Sandstone Member of the Cambrian Riley Formation is composed of some of the oldest sedimentary rocks found in Texas. In most of the northern and western portions of the aquifer, the Hickory can be differentiated into lower, middle, and upper units, which reach a maximum thickness of 480 feet in southwestern McCulloch County. In the southern and eastern extent of the aquifer, the Hickory consists of only two units. Block faulting has compartmentalized the Hickory Aquifer, thus restricting flow.(top)

Recharge2

Most of the recharge to the Hickory is probably from direct infiltration of precipitation on the outcrop of the Hickory Formation. The amount is unknown, but can be approximated by planimetering the areal extent of the outcrop areas which provide recharge to the Hickory, compiling rainfall records of the area, and estimating infiltration rates. The outcrop areas on the map total 136 square miles, or 87,040 acres. This represents the total Hickory outcrop area potentially contributing recharge to the Hickory Aquifer within the District. The average annual rainfall for the area is 24 inches. Infiltration rates for sand formations in Texas range from far less than one-quarter inch per year in West Texas up to approximately three inches per year in East Texas. If one inch of the average precipitation actually infiltrated the Hickory Aquifer, such recharge would total 7,250 acre-feet per year, or 6.5 million gallons per day (MGD). If as much as two inches of the average precipitation were to infiltrate, which is probably unlikely, such recharge would total 14,500 acre-feet per year, or 13 MGD.
The amount of recharge occurring via stream flow losses from creeks that cross the Hickory outcrop area is also unknown. A preliminary office review of the relationship of the outcrop areas to drainage patterns indicate few streams exist which have large drainage areas upstream from the outcrop areas. Notable exceptions include small parts of the outcrop area traversed by the San Saba River or by the Llano River and a larger part of the outcrop traversed by Tiger Creek. Recharge via stream flow losses may not be too significant. Exact conditions can only be determined by more detailed investigations including field studies.
Recharge via leakage from adjacent formations probably is not too important accepting possibly where shallow alluvial deposits overlie the Hickory outcrop. Normally, low permeability materials largely restrict leakage from adjacent formations. However, faulting in some areas may place permeable materials adjacent to the Hickory; in such areas, leakage could be of more significance. Information on leakage will likely be difficult to obtain and will require extensive field data.(top)

Storage

The amount of water in storage in the Hickory Aquifer can be calculated based on the thickness and extent of the aquifer and its porosity. Calculations can be made for the outcrop area and the area down-dip from the outcrop of the Hickory. Assuming a porosity of 20 percent, an outcrop area of 136 square miles, and an average saturated thickness of 150 feet, the amount of water stored beneath the outcrop area is estimated to be about 2.6 million acre feet, or 8.5 x 105 million gallons. Similarly, the amount in storage in the formation between the outcrop area and the down-dip limit of fresh water can be calculated. Assuming porosity of 20 percent, an area of 2,335 square miles and an average saturated thickness of 300 feet, the amount of fresh water stored in the aquifer down dip from its outcrop are is calculated to be 90 million acre feet, or 2.9 x 107 million gallons. Thus the total amount of water stored in the Hickory Formation is estimated to be approximately 93 million-acre feet, or 3 x 107 million gallons.
Groundwater from the aquifer is generally fresh. However, locally, the aquifer produces water with excessive alpha particles and total radium concentrations in excess of drinking water standards. The water can also contain radon gas. The upper unit of the Hickory produces groundwater, containing concentrations of iron in excess of drinking water standards.(top)

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Edwards-Trinity Aquifer4

The Edwards-Trinity Plateau Aquifer underlies the Edwards Plateau east of the Pecos River and the Stockton Plateau west of the Pecos River, supplying water to all or parts of 38 counties. The aquifer extends from the Hill Country of Central Texas to the Trans-Pecos region of West Texas. Within District Boundaries, the Edwards-Trinity Aquifer underlies parts of McCulloch and Mason Counties, and all District acreage in Kimble, Concho, and Menard Counties.
The aquifer consists of saturated sediments of lower Cretaceous age Trinity Group formations. Natural chemical quality of water ranges from fresh to slightly saline. The water is typically hard and may vary widely in concentrations of dissolved solids and bicarbonate. The salinity of the groundwater tends to increase toward the west.
There is little pumpage from the aquifer over most of its extent; however, in some instances water levels have declined as a result of pumpage. Historical declines have occurred in the northwestern part of the aquifer. Rapid population migration from the cities of Austin and San Antonio will add considerably to usage.(top)

Recharge

Groundwater in the Edwards-Trinity (Plateau) Aquifer occurs under both confined and unconfined conditions. Recharge is primarily through the infiltration of precipitation on the outcrop, in particular where the limestone formations outcrop. Discharge is to wells and to the Pecos River and Rio Grande in the southwest, the Colorado River in the northeast, and to the Frio, Medina, Nueces, and Guadalupe Rivers in the Hill Country area. Groundwater flow in the Edwards-Trinity aquifer generally flows in a south-southeasterly direction, but may vary locally. The hydraulic gradient averages about 10 feet/mile. Long-term water-level declines have been observed in areas of heavy pumping.(top)

Storage

Aquifer properties of the Trinity Group formations vary across the aquifer.
Transmissivities range from 1,000 to 10,000 gpd/ft, but average about 3,000 gpd/ft. Storage coefficients for the Trinity formations are estimated to be between 1 x 10-4 to 1 x10-5, and specific yields are estimated to be 0.05 to 0.10. Specific capacities of wells range from less than 1 to greater than 20 gpm/ft. Reported well yields commonly range from less than 50 gpm from the thinnest saturated section to 1,500 gpm, although higher yields occur in locations where wells are completed in jointed or cavernous limestone.
Due to the nature of ground water flow in the Edwards, it is very difficult to estimate aquifer properties for this portion of the aquifer. However, based on aquifer characteristics of the Edwards elsewhere, transmissivities are estimated to range from 50,000 to more than 300,000 gpd/ft, storage coefficients are estimated to range from 1 x 10-4 to 1 x 10-5, and specific yields are probably 0.01 to 0.02. Overall, the Edwards-Trinity (Plateau) aquifer has been described as having transmissivities of between 35,000 and 40,000 gpd/ft in the northern and eastern sections, and 35,000 to 375,000 gpd/ft in the southern and western sections2. These aquifer characteristics are predominantly for the fresh section of the aquifer, in particular from wells producing from the Edwards portion of the aquifer, and they are expected to be lower in the brackish section, which tend to be in the Trinity formations.(top)

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Ellenburger-San Saba Aquifer6

The Ellenburger-San Saba Aquifer underlies 4,000 square miles in parts of 15 counties in the Llano Uplift area of Central Texas. Discontinuous outcrops of the aquifer generally encircle older rocks in the core of the Uplift. The remaining down-dip portion contains fresh to slightly saline water to depths of approximately 3,000 feet below land and surface.
Water produced from the aquifer has a range in dissolved solids between 200 and 3,000 mg/l, but usually less than 1,000 mg/l. The quality of water deteriorates rapidly away from the outcrop areas. Approximately, 20 miles of more down-dip from the outcrop, water is typically unsuitable for most uses.
Most of the deep municipal wells, which supply the City of Brady, produce an unknown amount of water from the Ellenburger-San Saba sequence of rocks. A large portion of the water supply for the City of San Saba is believed to be from the Ellenberger-San Saba and Marble Falls Aquifer.(top)

Recharge

An estimated 29,400 acre-feet of water is discharged annually from the
aquifer in its outcrop areas and represents the average annual effective recharge to the aquifer. This amount was determined from spring flow measurements and equates to about 2 percent of the mean annual precipitation on the outcrop. Where saturated basal sands and sandstones of the Trinity Aquifer overlie the aquifer, the Ellenburger-San Saba also receives a significant, but unknown amount of recharge.(top)

Storage

Groundwater in the aquifer is found mostly under artesian conditions, even in much of the outcrop. The depth to groundwater varies from 30 to over 200 feet below ground surface. Transmissivity estimates range from 50,000 to 125,000 gpd/ft, storage coefficients are estimated to be 1 x 10-3 to 1 x 10-4, and specific yields are estimated to be 0.03 to 0.05. Production from public supply and irrigation well yields range
from 200 to 1,5000 gpm, although most other wells generally yield less than 100 gpm. The average well yield from all types of wells is about 65 gpm.
Groundwater near the outcrop of the Ellenburger-San Saba aquifer, and in some cases up to 20 miles down-dip, is generally fresh. TDS concentrations in the Ellenburger-San Saba aquifer generally increase with distance down-dip. Fresh groundwater is found mainly in areas where active recharge and flow occurs in the aquifer near the outcrop. While fresh groundwater is mostly found in areas near the outcrop, the aquifer also contains irregular occurrences of slightly saline groundwater near the outcrop area.
The Ellenburger-San Saba aquifer may be a potential source for small to
moderate volumes of brackish groundwater in the Llano uplift area. However, the development of brackish groundwater from the down-dip sections will require relatively deep production well. In addition, elevated concentrations of radium and radon also occur in the Ellenburger-San Saba aquifer as it occurs in the underlying Hickory, and this would have to be addressed if this aquifer is considered as brackish water
resource.
Availability is low to moderate according to LBG Guyton Associates.
Low transmissivity results in moderate productivity. Source water production costs would be moderate to high, due to the deep nature of the aquifer combined with moderate yields. (top)

Marble Falls Aquifer8

The Marble Falls Aquifer occurs primarily in the portions of McCulloch and San Saba counties within the District. Smaller amounts of water are also used for rural domestic supplies, watering of livestock and irrigation. Only small portions of Mason and Kimble counties are affected by this aquifer.
The Marble Falls Aquifer occurs in several outcrops, primarily along the northern and eastern flanks of the Llano Uplift Region of Central Texas. Groundwater occurs in fractures, solution cavities, and channels in the limestone of the Marble Falls Formation of the Pennsylvanian Bend Group. Maximum thickness of the formation is 600 feet. Numerous large springs issue from the aquifer and provide a significant part of the base-flow to the San Saba River in McCulloch and San Saba counties and to the Colorado River in San Saba and Lampasas counties.(top)

Recharge and Storage

Recharge to the Marble Falls aquifer is from precipitation on the outcrop areas. Discharge is mainly to numerous large springs emanating from the aquifer, and to wells.Groundwater flow is generally from the outcrop areas in a down-dip direction.
Groundwater occurs in solution cavities that have formed along fractures and faults in the limestone. Where underlying beds are thin or absent, the Marble Falls and Ellenburger-San Saba aquifers may be hydrologically connected. The aquifer is capable of producing small to moderate quantities of water to wells, with well yields
increasing significantly with acidizing.
Wells completed in the Marble Falls aquifer generally produce less than 100 gpm, although some irrigation wells have been reported to produce as much as 200 gpm. Very few data exist on the overall aquifer characteristics of the Marble Falls aquifer. However, based on well yields and aquifer characteristics of similar aquifers,
transmissivities are estimated to average less than 5,000 gpd/ft, storage coefficients are estimated to average 1 x 10-4, and specific yields are estimated to average 0.02.
Existing data for the Marble Falls aquifer show that it contains mostly fresh water in outcrop areas and becomes mineralized a short distance down-dip from the outcrop areas. However, very few data exist to evaluate the brackish water that is present.

Most wells producing from the Marble Falls aquifer produce fresh groundwater on the outcrop, while groundwater becomes highly mineralized within a relatively short distance of the down-dip. However, because the areal extent of the Marble Falls aquifer is relatively limited, and because much of the existing data indicate that the aquifer has limited groundwater availability, the Marble Falls aquifer must be considered a very limited source of brackish groundwater. Due to the presumed deep nature where brackish groundwater would be located, and the low productivity ofthe aquifer, relative costs are expected to be moderate to high.(top)

9

Surface Water Resources Of The Hickory UWCD No. 1

The only surface water resources impoundment used for other than livestock consumption is Brady Lake. The normal pool capacity is 30,000 acrefeet with a calculated annual firm yield of 3,100 acrefeet. Currently the City of Brady is not utilizing this water, however the city will construct a 3mgd R.O. Treatment Plant to provide the City of Brady adequate water supplies to blend with the Hickory Aquifer wells and maintain a Radium 226/228 level below state and federal standards. These levels are not scientifically proven and constitute another unfunded mandate. Current Brady Lake pumpage is approximately 9 acrefeet annually for domestic purposes. The San Saba and Llano Rivers bisect the District; however, only a small amount is used for other than livestock and domestic purposes.(top)

Total Projected Supply of Water in the District

Projected average annual groundwater available from aquifers within the District is estimated at approximately 36,444 acre-feet per year.10 & 11 This number is based on projections from Region F and Region K Water Plans. Numbers used for state planning were for the entirety of each county. Because the District covers only portions of five of its six county jurisdiction, numbers were prorated based on percentage of each county in District. Projections for 2020 and 2050 drop significantly. Estimates for 2020 are 33,770 acre-feet and 33,754 acre-feet for 2050.
Quality of water from the Hickory aquifer is of major concern to municipal users within the area. The aquifer contains naturally occurring radionuclides, supposedly in excess of safety standards. Regulatory agencies are expected to begin enforcement of policy in regard to this issue. If this does occur, Hickory water will no longer be available for municipal use beginning in 2010. The loss of this source and limitations on ground water availability in heavily irrigated counties significantly contribute to projected water shortages in this region. (top)

Natural of Artificial Recharge

The Texas Water Development Board, at the request of the District, completed a study of an area within the District to evaluate the possibility of beneficial artificial recharge of this area of the Hickory Aquifer. Evaluation of the Hickory Aquifer and Its Relationship to Katemcy Creek and Its Major Tributaries for Beneficial Recharge, McCulloch and Mason Counties, Texas, is available in the District Office. This study, along with subsequent studies, does not support an economically feasible recharge program.(top)

Groundwater Used in the Hickory UWCD

Based on the data obtained from the Texas Water Development Board, the information detailed on the chart below indicates the past groundwater usage in the District from 1990 to 1995.12

Potential Demands and Aquifer Supply
Capability Issues and Solutions

In the year 2050, the total projected water needs of the District are estimated at 30,978 acre-feet. While this number does not appear to be in excess of supply, bureaucratic rules regarding radionuclides will adversely affect this seeming surplus. According to the TCEQ, public water supplies in Mason County do not exceed the radionuclide standards. However, the cities of Brady and Eden, as well as other municipal systems in the area will suffer. Projected municipal usage in these areas is estimated at 3,352 acre-feet in 2010; 3,272 acre-feet in 2020; and 3,205 acre-feet in 2050.13
Individually, several counties will be unable to sustain the water demands based on the amount of available groundwater projected. In 2020, McCulloch County's demand of 5908 acre-feet, greatly exceed the projected supply of 4260 acre-feet. Paired with water quality legislation limiting the use of Hickory water for municipalities, the gap could widen even more. Concho County is facing a similar shortage with 985 acre-feet supply in 2020 and a for-seen demand of 1,487 acre-feet. The Supply and Demand Table illustrates discrepancies between supply and demand.

The Hickory is permitted for 25,763 acrefeet, currently, of which 12,000 acrefeet is not being used, but permitted to go to the City of San Angelo with anticipated usage after 2036. This amount was established after numerous lawsuits between the City of San Angelo and the District. The current supply will not be adequate if, and when, the City of San Angelo initiates pumping. Greater reliance on groundwater will need to be placed on the other aquifers within the District.(top)

Supply and Demand Table (in acre-feet)14

Tracking Methodology

The District manager will provide a report of staff activities to the District Board of Directors on a monthly or annual basis to insure management objectives and goals are being achieved.

Management Goals, Objectives And
Performance Standards

Goal 1.0 Implement management strategies that will protect and enhance the quality of useable quality water by encouraging the most efficient use of groundwater.
Management Objective
1.1 Annually the district will provide educational materials identifying conservation measures for the efficient use of water. Annually, two (2) District newsletter issues will be published that contain water conservation information. Handout packets with conservation literature will be provided at the annual McCulloch County Soil and Water Conservation 5th Grade Field Day or one other water related functions.
Performance Standard
1.1a Number of newsletters published annually containing water conservation information.
1.1b Number of annual events where conservation material was provided.

Management Objective
1.2 To insure available quality groundwater, the District will identify and monitor 100 wells for annual water level monitoring and obtain water levels on 50% of the selected wells annually.
Performance Standards
1.2a Percentage of monitor wells measured annually.(top)

Goal 2.0 To control and prevent the waste of groundwater.
Management Objective
2.1 Each year the District will loan flow meters for use by a irrigating farmer within the District to evaluate irrigation systems and reduce waste.
Performance Standard
2.1 A farmer will be loaned flow-meters to assist in evaluating their irrigation systems.
Management Objective
2.2 Each year the District will provide informative speakers to schools and civic groups to raise public awareness to ensure wise use of groundwater.
Performance Standard
2.2 Number of speaking appearances to promote wise water use provided annually.(top)

Goal 3.0 Develop a water quality/monitoring network for the purpose of establishing a baseline water quality.

Management Objective
3.1 The District will identify at least twenty (20) wells to be used as water quality monitoring wells that will be sampled annually.
Performance Standard
3.1 Number of wells will be sampled annually.(top)

Goal 4.0 Address conjunctive surface water management issues.
Management Objective
4.1 Annually meet, at least once, with City of Brady to discuss and review potential use of surface water resources in the area.
Performance Standard
4.1a Number of meetings with City representatives annually.(top)

Goal 5.0 Monitor drought conditions and inform water suppliers of severe drought conditions.

Management Objective

5.1 Annually monitor the Palmer Drought Severity Index (PDSI), notifying all public

water suppliers of severe drought conditions when applicable.

Performance Standards

5.1a Monitor PDSI and notify all public water suppliers within the District in the

event of severe drought conditions.

5.1b Annually report to Board of Directors incidents of severe drought

conditions and subsequent notifications of public water suppliers.(top)

Goal 6.0 Provide and distribute water conservation literature.

Management Objective

6.1 Annually the district will provide educational literature promoting

water conservation.

Performance Standards

6.1a Disseminate water conservation information to area residents.

6.1b Report to Board of Directors annually number of times water

conservation information was distributed.(top)

SB-1 Management Goals Determined Not Applicable
Goal 1.0 Controlling and Preventing Subsidence
The rigid geologic framework of the region precludes significant subsidence from occurring. This goal is not applicable to the operation of the District.
Goal 2.0 Addressing natural resource issues which impact use and availability of groundwater, and which are impacted by the use of groundwater. This goal is not applicable to the operation of the District.

Statement of Commitment by Hickory Underground Water Conservation District No. 1, to Effectuation of the District Groundwater Management Plan.

The District will implement the provisions of this plan and/or future amendments and will utilize the provisions of this plan, or amended plan, as a guidepost for determining the direction or priority for District activities as provided for in SB-1.

Bibliography

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1 Texas Almanac 2002-2003, 2000 Census Data, The Dallas Morning News
2 Recharge and Storage data obtained from "Hickory Aquifer Data" prepared for Hickory UWCD by R.W. Harden & Associates, August 1986
3 Aquifer maps obtained from Water for Texas, 1997, TWDB
4 Edwards-Trinity Aquifer information obtained from TWDB website: http://www.twdb.state.tx.us/publications/reports/GroundWaterReports/GWReports/Brackish%20GW%20Manual/08-Edwards-Trinity(Plateau).pdf Report by LBG-Guyton Associates
5 Aquifer maps obtained from Water for Texas, 1997, TWDB
6 Ellenburger-San Saba Aquifer information obtained from TWDB website: http://www.twdb.state.tx.us/publications/reports/GroundWaterReports/GWReports/Brackish%20GW%20Manual/26-Ellenburger-SanSaba.pdf Report by LBG-Guyton Associates
7 Aquifer maps obtained from Water for Texas, 1997, TWDB
8 Marble Falls Aquifer information obtained from TWDB website: http://www.twdb.state.tx.us/publications/reports/GroundWaterReports/GWReports/Brackish%20GW%20Manual/27-MarbleFalls.pdf Report by LBG-Guyton Associates
9 Aquifer maps obtained from Water for Texas, 1997, TWDB
10 Region F Water Plan, January 2001
11 Region "K" Water Supply Plan for the Lower Colorado Regional Water Planning Group, December 2000
12 TWDB
13 Region F Water Plan, January 2001
14 Data used to calculate table derived from Region F Adopted Regional Water Plan, Figure 4-1, with the exception of San Saba County, in which numbers derived from Region "K" Water Supply Plan for the Lower Colorado Regional Water Planning Group, December 2000