Vallecito Dam, Durango, Colorado Archive Search Results
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View of dam looking downstream from a point on left side of reservoir, approximately 1/4 mile upstream.
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View of hand-tamping operations around outlet conduit, taken fro the top of the left bank opposite outlet works station 8+85. Note embankment cut-off wall in left background.
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Close-up of hand-tamping operations in backfilling along the outlet conduit from works station 9+25.
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Placing reinforcement steel in section of outlet conduit.
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Placing concrete in spiral stairway and air shaft from elevation 7641 to 7649.5.
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Dome of gate chamber and base of stair shaft after forms were stripped.
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Looking downstream in spillway channel from sta. 14+25. Excavation in foreground is too subgrade. Water appears to have been trapped by rock ridge seen in Pine R - 149.
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Looking upstream at excavation for spillway stilling basin. Taken from right side of spillway at sta. 30+50.
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Looking upstream at excavation for spillway stilling basin. Taken from right side of spillway at sta. 30+50.
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Looking upstream in spillway channel excavation. Shovel is working in stilling basin.
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Looking downstream in spillway channel from sta. 7+00. Le Tourneau in foreground is excavating material upstream from sta. 15+00. Placing of concrete walls can be seen below station 15+00.
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Placing dumped riprap on right side of spillway outlet channel. Darker colored rock was placed during 1939 season.
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Panorama looking upstream at spillway and river channels from spillway station 30+50. Placing of drains and fine grading for concrete on vertical curve and stilling basin floor can be seen at left.
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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
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Looking downstream at spillway stilling basin from left side of channel at sta. 26+30. Placing section of stilling basin wall in foreground. Refer to Pine R - 283.
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Panorama looking upstream at spillway and river channels from spillway station 30+50. Placing of drains and fine grading for concrete on vertical curve and stilling basin floor can be seen at left.
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Looking upstream at spillway from a point approximately 300 ft. downstream from end of structure. Discharge is estimated at 120-second feet.
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Looking upstream in outlet conduit from point opposite sta. 13+40 of the outlet conduit. Dragline is placing concrete in invert with a bottom-dump bucket.
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Placing concrete in outlet conduit between stations 10+64.17 and 10+96.83. Dump trucks haul concrete from the mixing plant and dump into the hopper which is lowered to the buggy deck with a small dragline.
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Looking upstream in outlet conduit from a point on the right rim near the intersection with the cut-off trench.