1

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

TECHNICAL MEMORANDUM ALAN PLUMMER ASSOCIATES, INC. Region C Water Planning Group Irrigation Demand Projections

PROJECT: 0312-041-01 DATE: July 30, 2009 PREPARED FOR: Region C Water Planning Group PREPARED BY: Alan Plummer Associates, Inc. Background

Municipal water demand projections in the 2006 Region C Plan were based on per capita dry-

year water use and the adopted population projections. Projections of the irrigation demand

relied on the analysis of historical trends and Texas Water Development Board (TWDB) draft

projections. The TWDB Water Uses Section conducts the Annual Survey of Ground and Surface

Water Use to collect current, accurate information on quantities, sources, and related water use

data. To gather additional information regarding irrigation and livestock, questionnaires were

mailed to the 16 County Agricultural Extension Agents. Collected data was then used to develop

summary water use information for irrigation water use estimates.

The most recent irrigation water use estimates available from the TWDB are for the year 2006.

Attachment A provides a comparison of historical irrigation usage and projections by county in

Region C. Figure 1 provides a comparison of irrigation water usage and projections in Region C.

In 2006, the Region C irrigation water demand was approximately 31,000 acre-ft/yr. As noted in

Figure 1, historical irrigation water use is consistent with the adopted 2006 Region C projections.

For the purpose of the 2011 Regional Water Plan, no changes to the irrigation water use

projections are recommended at this time.

DRAFT

DRAFT

F:\projects\03

312\041-01\Wrk\CChapter 2 - Populat

Figure 1. 2

tion and Demand\M

006 Region

2

Mining Manufactu

C Plan Irri

uring Irrigation Liv

igation Proj

vestock\Final Mem

jections

mo_irrigation.docxx

DRAFT

DRAFT

3

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Table 1. 2006 Region C Irrigation Water Consumption Projections

Year County 2000 2010 2020 2030 2040 2050 2060Collin County 2995 2,995 2,995 2,995 2,995 2,995 2,995Cooke County 0 444 444 444 444 444 444Dallas County 13087 13,087 13,087 13,087 13,087 13,087 13,087Denton County 2108 2108 2108 2108 2108 2108 2108Ellis County 583 583 583 583 583 583 583Fannin County 4608 4608 4608 4608 4608 4608 4608Freestone County 8 8 8 8 8 8 8Grayson County 3382 3,561 3,751 3,950 4,158 4,381 4,616Henderson County 0 0 0 0 0 0 0Jack County 0 0 0 0 0 0 0Kaufman County 2916 2916 2916 2916 2916 2916 2916Navarro County 0 0 0 0 0 0 0Parker County 422 422 422 422 422 422 422Rockwall County 1125 1125 1125 1125 1125 1125 1125Tarrant County 8417 8,417 8,417 8,417 8,417 8,417 8,417Wise County 502 502 502 502 502 502 502Region C Total 40,153 40,776 40,966 41,165 41,373 41,596 41,831

DRAFT

DRAFT

4

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Attachment A

Irrigation Demand by County Including 2006 Projections

DRAFT

DRAFT

5

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 1. Collin County Irrigation Demands

0

500

1000

1500

2000

2500

3000

3500

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

6

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 2. Cooke County Irrigation Demands

0

200

400

600

800

1000

1200

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

7

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 3. Dallas County Irrigation Demands

0

2000

4000

6000

8000

10000

12000

14000

16000

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

8

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 4. Denton County Irrigation Demands

0

500

1000

1500

2000

2500

3000

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

9

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 5. Ellis County Irrigation Demands

0

100

200

300

400

500

600

700

800

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

10

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 6. Fannin County Irrigation Demands

0

2000

4000

6000

8000

10000

12000

14000

16000

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

11

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 7. Freestone County Irrigation Demands

0

20

40

60

80

100

120

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

12

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 8. Grayson County Irrigation Demands

0

1000

2000

3000

4000

5000

6000

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

13

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 9. Henderson County Irrigation Demands

0

50

100

150

200

250

300

350

400

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

14

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 10. Jack County Irrigation Demands

0

20

40

60

80

100

120

140

160

180

200

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

15

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 11. Kaufman County Irrigation Demands

0

500

1000

1500

2000

2500

3000

3500

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

16

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 12. Navarro County Irrigation Demands

0

20

40

60

80

100

120

140

160

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

17

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 13. Parker County Irrigation Demands

0

200

400

600

800

1000

1200

1400

1600

1800

2000

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

18

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 14. Rockwall County Irrigation Demands

0

200

400

600

800

1000

1200

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

19

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 15. Tarrant County Irrigation Demands

0

2000

4000

6000

8000

10000

12000

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT

20

F:\projects\0312\041-01\Wrk\Chapter 2 - Population and Demand\Mining Manufacturing Irrigation Livestock\Final Memo_irrigation.docx

Figure 16. Wise County Irrigation Demands

0

200

400

600

800

1000

1200

1400

1600

1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070

Dem

and (Ac‐Ft)

Year

Historic 2006 Region C Plan

DRAFT

DRAFT