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<br />~;}i~~:;:_:.;(~:;.i't;;:;:'t~'::>' ;J?~~:'~;':;;~//: '. <br /> <br />';'~:~(F;.'::;.<;f'}":>:.;}:;~~;{'<'~'~.,},,&~:__~~;.;i::,:;;'?;;.::~:}:X:;-:>-'GY:~~~~~~t~~t',}':9,::~'.'l~ <br /> <br />.~.=': ,":.-. <br /> <br />>,.....,/ <br /> <br />...,' <br /> <br />:;:~.... .~, <br /> <br />"'.:. <br />.....:'. <br /> <br />::;..> <br /> <br />..',.......;- <br />':....:..:.:-... <br /> <br />;i;)& <br /> <br />o <br />CJl <br />CJl <br />~ <br /> <br />The difference in water-level measurements on these <br /> <br />:::,;..:~:. <br /> <br />The red dots on the map indicate the location of <br /> <br />.,'..' <br />':Y:.:~;~ <br />. '~,'- .". <br />;~"~./: <br />:':;:: ;~',: <br />..,. <br />:?;.;::~~ <br />:..~.:'!-: :~:;';" <br />.~ .J'~ '..~. <br />)::-~/::. <br />.,....'...:.; <br />:;.~\\:. <br />.....;'1=... <br />t~~t:;l <br /> <br />.,.;. "',-:~ <br />~{{i:: <br /> <br />I <br /> <br /> <br />........ <br /> <br />maps are shown by colors. Declines in water level are <br /> <br />shown in yellow, green, and purple. The colors are <br /> <br />interpreted as followsl yellow, 0 to -2 feet, green, <br /> <br /> <br />-2 to -4 feet, and purple, -4 to -6 feet. A rise in <br /> <br /> <br />water level is shown in brown, 0 to +2, light blue, +2 <br /> <br /> <br />to ~J and blue, +4 to +6. The amount of water-table rise <br /> <br />in the period May 1 to Aug. 1 in this part of the valley <br />was less than 2 feet. <br /> <br />irrigation wells. The areas of greatest decline correspond <br />to areas of the greatest concentration of wells and, <br /> <br />'.~~:f:.~%: <br />:,::>,~': <br /> <br />therefore, the largest withdrawal of ground water. Areas <br />of water-table rise are areas where excess surface water <br /> <br />;....... <br />::.:::;{f. <br /> <br />~D~ <br /> <br />was spread. <br /> <br />W.". <br />"'"':. ~.". <br />?~~~*~ <br />{:;~:~ <br />.?!;t~!:~. <br />;~~~f~V <br />. . .~, .).., <br />':;.'.:.;)-? <br /> <br />~~: <br />~~~~::~:~::j' <br />.. .. :~.. <br /> <br />.>~/'. 'r. <br /> <br />We will compare these change maps with surface-water <br /> <br /> <br />application, precipitation, ground-water pumpage, and <br /> <br /> <br />channel loss and gain studies for these same periods. <br /> <br /> <br />The results of three recent channel loss and gain <br /> <br /> <br />studies are shown by these overlays. on these overlays a <br /> <br /> <br />gaining river is shown in blue and a losing river in red. <br /> <br />..- <br />.,oJ'. ..:..:..~., <br /> <br />...,.....- <br /> <br />The points where the measurements were made are shown by <br /> <br />. . , - . <br /> <br />blacK lines. Inflow of surface water and diversions have <br /> <br />been eliminated from the calculations, and only ground- <br /> <br />water inflow to the river or loss from the river is <br /> <br />represented. on May 15 the river between the Fort Lyon <br /> <br /> <br />diversion dam (near La JUnta) and the Las Animas gage <br /> <br />..';:.' <br /> <br />/ <br />