Panhandle Water Planning Area

Initially Prepared Plan

Panhandle Water Planning Area

AmarilloApril 28, 2010

CONSULTANTS:Freese and Nichols, Inc.Texas AgriLifeIntera, inc.

Panhandle Water Planning Area

Panhandle Water Planning Area

State Water Plan

Panhandle Water Planning Area

Panhandle Water Planning Group

22 members representing:• Municipalities• River Authorities• Counties• Public• Environmental• Electrical Generating Utilities

• Water Utilities• Water Districts• Industrial• Small Business• Agriculture• Higher Education

Panhandle Water Planning Area

2011 Initially Prepared Plan Update of 2006 Plan 8 Chapters Supporting Appendices Available for Review Final Plan – September 1, 2010

Panhandle Water Planning Area

Panhandle Water Planning Area 21 Counties Agribusiness

Panhandle Water Planning Area

Groundwater- Groundwater Conservation Districts- Groundwater Management Areas

Panhandle Water Planning Area

Wholesale Water Providers Seven WWPs

CRMWA Amarillo Cactus Borger Greenbelt M&IWA Mesa Water, Inc. Palo Duro River Authority

Panhandle Water Planning Area

PWPA Population- Growth rate = 0.7%- Occur near cities

Panhandle Water Planning Area

PWPA Demands Decrease over time Reductions in irrigation

0

200,000

400,000

600,000

800,000

1,000,000

1,200,000

1,400,000

1,600,000

1,800,000

2010 2020 2030 2040 2050 2060

Wat

er D

eman

ds (

ac-f

t/yr

)

Irrigation Demands Livestock Demands Manufacturing Demands

Mining Demands Municipal Demands Steam Electric Demands

Panhandle Water Planning Area

PWPA Demands- Largest in heavily irrigated counties

Panhandle Water Planning Area

97% Supply in PWPA - Groundwater

Major Aquifers Minor Aquifers

Maj

Panhandle Water Planning Area

Surface WaterCanadian and Red River BasinsThree Major Reservoirs

Panhandle Water Planning Area

Source Availability Ogallala Availability (2004 GAM)

40/50/80 Approach 2004 Northern GAM Model

Calculated for each 1 sq mi grid Rita Blanca

Included as part of Ogallala Dockum, Seymour, Blaine

1.25% decline in storage Reservoirs

Safe Yields

Panhandle Water Planning Area

Ogallala Volume(2004 GAM)

Panhandle Water Planning Area

Total Supply by Source

Panhandle Water Planning Area

Supply to Water Users Consider most limiting factor

Geographical constraints Infrastructure Contracts

Consider source Location Availability Quality

Panhandle Water Planning Area

Supply to Users in PWPA

Panhandle Water Planning Area

Comparison of Supply to Demand

27 WUGs with Identified Shortages 454,726 Acre-Feet in 2010 487,957 Acre-Feet in 2030 419,780 Acre-Feet in 2030

99% attributed to Irrigation in 2010, 91% in 2060 Limitations of availability in

irrigation areas

7% 2%

91%

Projected Water Shortages in 2060

MUN

MFG

IRR

STK

SEP

Panhandle Water Planning Area

Water Management Strategies Shortages identified for :

Municipal Manufacturing Steam Electric Power Irrigation

Other needs Water quality Reliability

Panhandle Water Planning Area

Conservation Municipal Conservation

Cities County Other

Irrigation Conservation All counties Counties with needs discussed in

detail in Chapter 4

Panhandle Water Planning Area

Develop New GroundwaterWholesale Water Providers

Amarillo Borger Cactus CRMWA Greenbelt

County Other Moore Potter Randall Hall

Cities: Canyon Dumas Gruver Lefors Memphis Spearman Sunray

Other SEP, Moore Co.

Panhandle Water Planning Area

Purchase from Provider Manufacturing, Moore Co. Manufacturing, Potter Co. Memphis Borger

Panhandle Water Planning Area

Alternate Strategies Palo Duro Transmission System Precipitation Enhancement

Counties with no current sponsor Purchase from Provider

Randall County-Other

Panhandle Water Planning Area

Other Studies Ogallala GAM Update Surface water study – Lake

Meredith

Panhandle Water Planning Area

Update to Northern Ogallala GAM Updated red bed data (saturated

thickness) Updated historical pumpage Good calibration

Improved over 2004 model Changes in availability

Related to red bed data Some associated with aquifer

designation (Dockum vs Ogallala)

Panhandle Water Planning Area

Updated GAMDifferences in Available Supply

2004 GAM and Updated GAM

Panhandle Water Planning Area

Impacts to Needs Continue to have irrigation

shortages Dallam, Hartley, Sherman, Moore

and Hutchinson New shortages or sooner

Panhandle Sunray (sooner) Perryton Texline Wheeler

Panhandle Water Planning Area

Lake Meredith Study

Panhandle Water Planning Area

Lake Meredith Study

94.7%

96.9%97.5%

98.3% 98.3% 98.4%99.0%

92%

93%

94%

95%

96%

97%

98%

99%

100%

1940

-194

9

1950

-195

9

1960

-196

9

1970

-197

9

1980

-198

9

1990

-199

9

1997

-200

6

Period of Record

Hyd

rolo

gic

Loss

Panhandle Water Planning Area

Summary of Findings Not a Factor

Annual precipitation Potential evaporation (temperature) Changes in irrigation practices

Potential Factors Rainfall intensity Increase in shrubland/decrease in

pasture lands Decrease in groundwater levels

Panhandle Water Planning Area

PWPA Water Supply Summary2010

20601.2 million ac-ft

1.4 million ac-ft

Panhandle Water Planning Area

Public Comment