5JAN
JANUARY 5, 1949
The 51st Texas Legislature approves creation of underground water conservation districts under authority of Article 16, Section 59 of the Constitution of Texas and Chapter 3A of Title 128, Vernon's Texas Civil Statutes.
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HOW IT ALL BEGAN
House Representative, I.B. Holt of Olton, authored House Bill 162, which created underground water conservation districts in Texas. This bill is sometimes referred to as the Texas Groundwater Act.
Source: Legislative Reference Library
26MAR
MARCH 26, 1951
The Texas Board of Water Engineers defined/delineated all or part of the following counties as 'Subdivision # 1 of the Underground Water Reservoir, High Plains Area, Ogallala Formation, South of the Canadian River in Texas.'
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COUNTIES DELINEATED
They are: Armstrong, Bailey, Briscoe, Castro, Cochran, Crosby, Deaf Smith, Dickens, Floyd, Garza, Hale, Hockley, Lamb, Lubbock, Lynn, Oldham, Parmer, Potter, Randall, Swisher, and Terry Counties.
9JUL
JULY 9, 1951
Petition filed by more than 50 persons who hold title to land in this area asking for the creation of the High Plains UWCD # 1.
9AUG
AUGUST 9, 1951
The following District Directors' Precincts were delineated during a public hearing at Plainview...
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PRECINCT DESIGNATIONS
PRECINCT ONE: Crosby, Dickens, Garza, Lubbock, and Lynn    Counties.
PRECINCT TWO: Cochran, Hockley, Lamb, and Terry Counties.
PRECINCT THREE: Bailey, Castro, and Parmer Counties.
PRECINCT FOUR: Armstrong, Deaf Smith, Oldham, Potter, and    Randall Counties.
PRECINCT FIVE: Briscoe, Floyd, Hale, and Swisher.
29SEP
SEPTEMBER 29, 1951
Voters in 13 counties ratified the creation of the High Plains Underground Water Conservation District No. 1...
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COUNTIES WHO VOTED
Briscoe County and Silverton voted against confirmation.
Crosby County and Crosbyton/Ralls voted against confirmation.
Dickens County voted against confirmation.
Garza County and Southland voted against confirmation.
Hale County and Plainview/Hale Center voted against confirmation.
The Cities of Ropesville and Sundown did not become part of the district due to a tie vote in each case.
The City of Wolfforth in Lubbock County voted against confirmation.
Oldham County voted against confirmation.
Swisher County voted against confirmation.
Terry County voted against confirmation.
No votes cast in the portion of the City of Amarillo within the district.
The portion of Amarillo in Randall County voted against confirmation.
5NOV
NOVEMBER 5, 1951
Precinct One: E. C. Hatton, Precinct Two: A. C. Chesher, Precinct Three: Jesse M. Osborn, Precinct Four: Tom McFarland, Precinct Five: Tom Bostic
21JAN
JANUARY 21,1953
Senate Bill 30 ratified, confirmed, and validated the designation of the High Plains Underground Water Conservation District No. 1...
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SENATE BILL 30
SB 30 was introduced by Corbin Hazelwood, and Rogers of Childress, Texas.
22MAY
MAY 22, 1967
One-quarter of Hale County joins HPWD. (Precinct Two- Petersburg)
14JAN
JANUARY 6, 1969
One-quarter of Crosby County joins HPWD.
02APR
APRIL 02, 1988
The remaining portion of Crosby County, above the escarpment, joins HPWD.
08AUG
AUGUST 08, 1992
The remaining portion of Cochran County joins HPWD.
08AUG
AUGUST 08, 1992
The remaining portion of Lynn County joins HPWD.
14AUG
AUGUST 14, 1993
The remaining portion of Hale County joins HPWD.
15JAN
JANUARY 15, 1994
The remaining portion of Bailey County joins HPWD.
02NOV
NOVEMBER 2, 2010
The northwest quadrant of Hockley County joins HPWD.
02NOV
NOVEMBER 2, 2010
The southwest quadrant of Lamb County joins HPWD.
02NOV
NOVEMBER 2, 2010
All of Swisher County joins HPWD.