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<br />001351
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<br />Tn cooperation with the National Park Service, a study of the geology
<br />and hydrology of the Texas, Travertine and NevarreSprings in Death Valley
<br />National Monument. The studY includes an inventory of all springs and
<br />wells in the ,area,. measurements or estimates of spring discharge,
<br />collection of chemical analyses and preparation of a geologic map.
<br />
<br />A study ,of the geologic and hydrologic features of the Edison-Maricopa
<br />and the Ducor-Famosa ,areas in' the l'l9utbern San Joaquin Valley. The study
<br />includes estimates of ground-water pwnpage and over-araft, if 8!Wi
<br />possibilities' for recharging the aquifer, 'and a determination of water
<br />(11,1&11ty with special emphasiB on dill~ibution of zones of inferior quality
<br />that may affect recharge possiblllties.
<br />
<br />A study of the geology, g:round-water and surface-waterteatures of
<br />san Nicola's Island at the request of the Navy.
<br />
<br />participating il?- studies of the InteroioAgeney Comrrii ttee on land sub-
<br />sidence'in the San Joaquin Valley that began on a snall scale in July :1$55
<br />has ,been expanded to a major project. The objecti1.'es of t~1l program are
<br />to determine 'l;he causes of SUbsidence, 1>> estimate the rates and amounts
<br />of subsidence the would occur in -the fUture under assumed conditions, to
<br />determine if the subsidence is reversible and to determine, methods that
<br />might be used to decrease or alleviate subsidence. ' , .'
<br />
<br />In cooperatio,n with the California Depar,tment of WateTReso,UT_llee:nd
<br />the Water, Pollution Control Boavds,investigations of chemical quality of
<br />water curr9ntly include sampling and analyses for 7 daily stl!ltions, 100
<br />monthly stations, and analyses for some 1,000 miscellaneous samples. In
<br />addi tion, 6 da:l.lychen4cal-quallty stations are being maintained under the, '
<br />Federal Irrigation Network. - '
<br />
<br />A new program to inves,tigate the sediment characteristics of ' California
<br />streams was initiated during the period in co ope ration '-with the California-
<br />Depar'bnent of Water Resources. In fiscal year 1957 this program includes
<br />the operation of 5 continueous..type samplil;rg stations ahdll periodic
<br />stations. Clos,ely related to this program'are 2 continuouS' stations and 17
<br />periodic stations which are being maintained in cooperation with the Bureau
<br />of Reclamation am the Corps of Engineers. It is antiCipated that the State_
<br />prqgram will be' to a large extent permanent and that it w:i.ll be increased '
<br />al!l conditions warrant.
<br />
<br />Co lor Mo-Wyoming
<br />
<br />Numerous changes in the streammgaging station network have been made
<br />in accordance with the policy of discontinuing stations where the length
<br />of record is adequate and of replacing them with stations on ungaged
<br />streams. The Colorado Water Conservation Board provided additional coop.
<br />erative funds for this purpose. Records of the neW stations will be use-
<br />ful in determining the feasibilUy Qfparticipating projects for which
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