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DEEP-WELL RECORDS AND WELL-LOGS 277. WELLS IN T.4 N.,R. 6 E. i A deep well was drilled in search of oil and gas on the south bank of the Mokelumne River in sec. 36, T. 4 N., R. 6 E., and is now pumped to supply the swimming pool at Lodi. The well was drilled by J. N. Jensen, of Sacramento. A 'workman who helped drill the well reports that the chief aquifer is at 1,259 feet,for at that depth the well began to flow. The flow increased as the well was drilled deeper,, and considerable gas was also struck. Only sand, silt, and clay were encountered. The yield is reported to be 300,000 gallons in 17 hours. 'The well is 1,950 feet deep and was drilled in 1905. The water for- merlydi . O ' ' siderable part of the hole was cased, but now it has only 00 feet of scharged 8 feet above the ground surface con- asing. The original temperature of the water is reported to be 870 F. he well is now equipped with a Byron Jackson single-stage turbine th a 10-horsepower motor. This pump runs continuously and is eported to discharge 295 gallons a minute duringthe summer when e swimming pool is used. The temperature of the water after being conducted for about a mile through a pipe is 82°F. l 1, t WELLS IN T.4 N.,R. 7 E. {' Driller'e log of well 472N1 � i [G.Wakefield,owner) Thick- DepthThick- (feet) _ (fet (feet) Tness Depth (feet) (feet) Hard surface awl--- 3 ' Subsoil------------- ------------------------ 3. 8 Red brittle clay------------------- 19 270 Yellow clay-_-_ 6 Sticky gray clay----------_- 12 2g2 Sand------ ---- 30 36 Brown cls 3 285 Soft brown clay--------------- - 8% 3734 Rd clap_y_-__----- 10 295 Rock and brows clay____________ 3'� Streak of small gravel and black Washed gravel, grading down- Gra69 y 1 297 A and into clay- - 8 y @a- -- ---------------------- � 320 � Gray clay---- - 6 82 77 Blue clay--------- - 3 Soft brown silt_----------- - -- 43 125 Pink clay_---------___------------- 2 323 ,II I Small cementd Eravel____-- 7 132 Grayclay-_-------_- ----- 6 325 Red clayHard sandstone-------------------- 330 j ------------- 2 134 Gra cls 8 338 i I Soft gray clay — - - le 150 y y" --------------------- 5 343 i Hard gray clay------------------- 5 155 $mall gravel---------------------- 1 344 i Sandstone - ----- - 20 Hard rd clay -- 10 Tough blue clay ----------------- 175 Green clay_------------ 11 clay at 192 feet- 9 190 Sandstone_________________ ____ b 370 Brown cls Bed clay----------- ----------- 3 375 �. Ora clay, __ ------ 13 205 Red sandstone--------------------- 16 394 y y, feet into brown Sand and clay at y-feet—_-_ 10 215 gravel___-.._._Y_-____-_ 1 395 Brown cla "'-_"----"'"- Sticky gray els Stick y -- -- ------ 4 220 Rd clay y --- ---------- 5 401 y gray clay-- 8 y - - - 4 406 Brown clay------_____ 4 22 Streak of a- sand.. 2: 408 Brown sandstone_---------" - gr "----- 3 235 SandstSticky red clay-------_--- - 8 Small gravel. - 1 236 R d cclaye__------- -------- 10 428 414 Sandstone------- - -- - 4 Brown clay_________________ 3 240 Dark sandstone--------------_----- 11 248 Black sand----- 438 d rd clay----------_- - -- -- 3 251 Sticky red clay-------------------- 2 444 --------- --------- 4 442 86579-30--19