Vallecito Dam Construction Project

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: Looking upstream at spillway stilling basin (1); Looking upstream at spillway stilling basin from left side of channel at sta. 28+00. Placing section of stilling basin wall in foreground., Original photo number: Pine R - 265

: Looking upstream at spillway stilling basin (10); Looking upstream at spillway stilling basin from right side of channel at station 30+50. Placing final 9-foot lift in walls. Refer to Pine R - 275., Original photo number: Pine R - 420

: Looking upstream at spillway stilling basin (11); Looking upstream at spillway stilling basin from right side of channel at station 30+50. Concrete walls are completed and ready for backfill. Refer to Pine R - 280., Original photo number: Pine R - 365

: Looking upstream at spillway stilling basin (12); Looking upstream in spillway stilling basin from sta. 28+45. Concrete is being placed in floor section on vertical curve. Note man working under..., Original photo number: Pine R - 338

: Looking upstream at spillway stilling basin (13); Looking upstream at vertical curve of spillway from point near left wall at sta. 27+53. Concrete is being placed in floor section on slope that is seen being prepared for concrete in Pine R - 229., Original photo number: Pine R - 339

: Looking upstream at spillway stilling basin (2); Looking upstream at spillway stilling basin from right side of channel at station 30+50. Backfill behind stilling basin walls has been completed. Refer to Pine R - 306, Original photo number: Pine R - 266

: Looking upstream at spillway stilling basin (3); Looking upstream at spillway stilling basin from right side at sta. 30+50. Concrete cut-off wall at sta. 28+00 is in foreground. Note trenches for drains on vertical curve. Refer to Pine R - 205., Original photo number: Pine R - 351

: Looking upstream at spillway stilling basin (4); Looking upstream at spillway stilling basin from right at sta. 30+50. Refer to Pine R - 220. Showing damage done to finished slopes by heavy rains, which occurred on August 27 and 28. There is about 3 feet of water standing in the stilling basin., Original photo number: Pine R - 385

: Looking upstream at spillway stilling basin (5); Looking upstream at vertical curve in spillway from right side at station 28+35. Showing damage to slopes caused by heavy rains. Refer to Pine R - 223., Original photo number: Pine R - 408

: Looking upstream at spillway stilling basin (6); Looking upstream at spillway stilling basin from right side at sta. 30+50, after water was removed from the floors area. The sub-drainage system became silted up, and it was necessary to remove all pipe and gravel and replace it with clean gravel,, Original photo number: Pine R - 353

: Looking upstream at spillway stilling basin (7); Looking upstream in spillway stilling basin from right side at sta. 30+50. Note shelters provided to maintain concrete at temperature of at least 50° F. for 72 hours after placing. They are heated with salamanders. Refer to Pine R - 229, Original photo number: Pine R - 410

: Looking upstream at spillway stilling basin (8); Looking upstream at stilling basin from right side at sta. 30+50. Note backfilling behind left wall. Stilling basin walls are placed to elev. 7541, leaving a 9-foot lift to be placed next season., Original photo number: Pine R - 422

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