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SPDSS_Task93_MappingHistoricLandUse_20070109
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SPDSS_Task93_MappingHistoricLandUse_20070109
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Last modified
4/17/2013 10:03:33 AM
Creation date
6/5/2008 2:38:06 PM
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Template:
Decision Support Systems
Title
SPDSS Task 93.2, 93.3, 93.4, 93.5 - Mapping Historic Land Use
Description
This memorandum provides details on the methods used to conduct a number of activities conducted under Task 93: Mapping Historic Land Use, including: Task 93.2: Mapping of Historic Land Use for the 1980s; Task 93.3: Mapping of Historic Land Use for the 1970s; Task 93.4: Mapping of Historic Land Use for the 1950s; and, Task 93.5: Assignment of Water Supply for Three Dates Historic Land Use.
Decision Support - Doc Type
Task Memorandum
Date
1/9/2007
DSS Category
GIS
DSS
South Platte
Basin
South Platte
Contract/PO #
C153960
Grant Type
Non-Reimbursable
Bill Number
SB01-157, HB02-1152, SB03-110, HB04-1221, SB05-084, HB06-1313, SB07-122
Prepared By
Riverside Technology inc.
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MEMO 93 <br />700,000 <br />600 <br />000 <br />, <br /> .Ground Water <br />500 <br />000 Only <br />, <br />~ <br />w 400 <br />000 ^GW & SW <br />, <br />U <br />Q <br />^Surface Water <br />v <br />i <br />300 <br />000- Only <br />s <br />, <br />rn <br />200,000- <br />100,000- <br /> <br />0 <br />1956 1976 1987 2001 <br />Year <br />Figure 13. Division 1 historic irrigated acreage by water source. <br />Table 4 and Figure 14 shows the irrigated acreage for Divisionl by irrigation type. District 47 is <br />irrigated entirely by flood. <br />Table 4. Division 1 historic irrigated acreage by irrigation type. <br />Irrigation Type 1956 % of <br />Total 1976 % of <br />Total 1987 % of <br />Total 2001 % of <br />Total <br />Flood 982,507 100.0% 875,960 86.2% 771,882 78.2% 615,521 67.6% <br />Sprinkler 0 0.0% 140,835 13.8% 215,268 21.8% 294,996 32.4% <br />Total 982,507 100.0% 1,016,794 100.0% 987,150 100.0% 910,517 100.0% <br />1,200,000 <br />1,000,000 <br />800,000 <br />a~ <br />Q 600,000 <br />:? <br />a~ <br />400,000 <br />200,000 <br />1956 1976 1987 2001 <br />Year <br />OSprinkler <br />O Flood <br />Figure 14. Division 1 historic irrigated acreage by irrigation type. <br />Page 24 of 59 ,Rrvera~Ge Feel~n81'agy, ioe. <br />
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