40-144 Nephi, Utah. July 1940. The barrier in the main Canyon above Nephi (lower barrier) after 18 years of successful operation. In the interval since construction the Nephi power plant was enlarged by placing the unit shown under this spillway. This was made possible by the stabilizing effect of the barrier system in controlling flood debris. 40-146 Nephi, Utah. July 1940. Juniper post, cottonwood log and rock crib spillway in Salt Creek Canyon, after 18 years of successful operation in controling [controlling] gravel and floods of Salt Creek. 26-310 Nephi, Utah. 1926. Panorama of Salt Creek barrier in north fork. 22-19 Nephi, Utah. December 1922. Committee from Farmington examining barrier and spillway at Nephi. This group is contemplating the building of a similar structure at Farmington. Geo. Hess on left, and Mayor Palmer in middle to right facing the camera. 22-20 Spring City Utah. 1922. Following the first torrential flood after construction of new diversion dam shown in distance. Nephi, Utah. April 1917. J.W. Paxman in a deep wash, showing the great depth of arid climate soils. Two views. (No negative) 33-243 Nephi, Utah. Spring of 1933. Location: Salt Creek Canyon Gravel Barrier. The first of the gravel barriers. This structure was built in the fall of 1922 for the purpose of checking the drifting gravel which had become a menace to the City of Nephi and to the farms served by the Nephi irrigation system. Each spring high water brought gravel out of the mountain canyons into the city streets of Nephi by way of the delivery canals of the irrigation system. In order to keep the water in the canals gravel was scraped onto the streets until mounds of it had been raised to the height of the top of the first story windows. The spillway is 7 feet high to the crest, with 5 foot wing walls. Below the spillway is a cut-off or check dam to prevent headward erosion of the stream as it reaches the spillway structure. This picture shows the stream in full action during spring run-off eleven years after the structure was first put into operation. Maintenance expenses during the period amounted to nothing. 32-40 First stage in development. 32-41 Nephi, Utah. May 4, 1932. Second stage in development. Two views showing the building of a beaver dam near intake to main canal in order to check gravel flow brought into channel by summer freshets the previous season. See “32-42”. 32-42 Nephi, Utah. May 4, 1932. Third stage in development. Building a beaver dam near intake to main canal in order to check gravel flow brought into channel by summer freshets the previous season. 32-43 Nephi, Utah. May 4, 1932. Scraping gravel dropped above barrier dam to marginal embankment on south. 29-120 Nephi, Utah. November 18, 1929. Location: Mouth of Salt Creek. View of old flood control structures, Mouth of Salt Creek. Men at work on new structure in background. 29-121 Nephi, Utah. November 18, 1929. Location: Mouth of Salt Creek. View of new structure in process of construction. Old flood control works in foreground. Nephi, Utah. June 23, 1928. Salt Creek Canyon. Two views looking up stream across lower barrier after six years of flood control operation. 28-84 Nephi, Utah. June 23, 1928. Salt Creek Canyon. Panoramic view from west end of upper barrier looking along top of barrier and up stream. 28-87 Nephi, Utah. June 23, 1928. Salt Creek Canyon. Showing panoram from north end of lower barrier looking up stream. 28-88 and 89 Nephi, Utah. June 23, 1928. Salt Creek Canyon. Two views looking down stream toward lower barrier, Salt Creek Canyon. 28-85 Nephi, Utah. June 23, 1928. Salt Creek Canyon. Looking up stream at upper barrier spillway. 28-90 Nephi, Utah. June 23, 1928. Salt Creek Canyon. Looking up stream at upper barrier spillway. Picture shows section of barrier and small seep coming from beneath embankment. 30-87 Nephi, Utah. June 1930. Looking down stream through new diversion dam following a summer freshet. 30-88 Nephi, Utah. June 1930. Outlet from recently constructed diversion dam near city limits. 26-56 Nephi, Utah. October 2, 1926. Looking up stream across upper gravel barrier. Salt Creek Flood Control. 26-58 Nephi, Utah. October 2, 1926. Looking up stream from gravel barrier spillway. 26-57 and 59 Nephi, Utah. October 2, 1926. Upper Barrier. Panoramas showing detail of silt and gravel deposit during four seasons of continuous operation. Note that the edge of the gravel deposit is on the far side of the stilling pool. All of the direct area is covered by still water during high water flow. 30-185 Nephi, Utah. July 1930. Location: Gravel Fans north of Mona. View showing gravel fans of cones at the base of a high mountain and at the mouths of the canyon. 30-185 Nephi, Utah. July 1930. Gravel Fans. Crest of Gravel Fan north of Mona. 25-86 and 91 Nephi, Utah. March 1925. Location: Lower Barrier. Two views showing spillway following recent addition to height of crest and wings. 25-88 Nephi, Utah. March 1925. Location: Lower Barrier. Detail of spillway after raising to full height. 25-94 Nephi, Utah. July 28, 1925. View showing detail of flood control basin after third successive year of handling the floods and gravel flow of Salt Creek. 22-42 and 42a Nephi, Utah. September 17, 1922. Series of view showing measurement of water on Salt Creek prio [prior] to establishing flood control structure. 22-42e Nephi, Utah. September 17, 1922. Series of views showing measurement of water on Salt Creek prior to establishing flood control structure. 22-49 Nephi, Utah. September 17, 1922. Measuring Salt Creek seepage loss prior to building flood control barrier. Winsor and Smith on right. 22-42c and 42d Nephi, Utah. September 17, 1922. Series of views showing measurement of water on Salt Creek prior to establishing flood control structure. 22-42b and 42f Nephi, Utah. September 17, 1922. Series of views showing measurement of water on Salt Creek prior to establishing flood control structure. 23-52 and 52a Nephi, Utah. August, 1923. Location: Lower Barrier. Two views looking downstream toward barrier and spillway. 23-54 and 54a Nephi, Utah. 1923. Location: Spillway. Two views. 23-56 Nephi, Utah. April 1923. View across stilling pool just above barrier. Nephi, Utah. April 1923. Location: Upper Barrier. Looking up stream through stilling pool. 23-61 Nephi, Utah. August 13, 1923. Mouth of Salt Creek Canyon showing flood which inundated railroad after filling channel to overflowing. This flood began about 5 p.m. while the flood at Willard and Farmington began about 8 p.m. on the same day. 23-63 Nephi, Utah. August 13, 1923. Location; Lower Barrier. View through spillway after flood had subsided. At its peak the flood had filled the spillway and had overflowed the barrier embankment to a depth of merely on foot. 23-51 Nephi, Utah. August 1923. Location: Upper Barrier. Showing general view of Barrier and spillway in operation during flood. 23-55 Nephi, Utah. July 1923. Location: Upper Barrier. Looking east along crest of barrier at close of first flood season after construction. 23-59 and 59a Nephi, Utah. August 13, 1923. Location: Mouth of Salt Creek Canyon. Two viess [views] showing summer flood after it started over structure at intake to canal. 23-60 Nephi, Utah. 1923. Lower Barrier spillway in operation during high water run-off, first season after construction. Nephi, Utah. April 1923. Section of Bad Lands. 22-40 and 40a Nephi, Utah. September 17, 1922. Two views, measuring the discharge of Salt Creek prior to building flood control barrier. 22-41, a, b, c, d, e. Nephi, Utah. September 1922. Six views, measuring the discharge of Salt Creek prior to establishing a system of flood control. 23-105 Nephi, Utah. August - 1923. In mouth of Salt Creek Canyon at head of canal system following summer flood of 1923, showing how structure was clogged with debris. 22-67 Nephi, Utah. 1922. Salt Creek. Measuring water at point near junction with South Fork prior to construction program. 22-47 Nephi, Utah. September 1922. Location: Upper Salt Creek. Locating Barrier Control Site. 22-46 Nephi, Utah. September 18, 1922. Location: Site of Upper Barrier. Looking upstream.
