Detention dams, Potato Hollow, constructed 1950, have completely filled with sediment; water table raised, continued grazing hinders permanent establishment of grasses. ; ZION Museum and Archives Image ZION 9362 ; ZION 7229
Tree planting and willow 'spider' jetties to deposit sediment and deflect river flow to right, near Union Pacific Sewer farm. ; ZION Museum and Archives Image ZION 9360 ; ZION 10152
Tree planting and willow 'spider' jetties to deposit sediment and deflect river flow to right, near Union Pacific Sewer farm. [smears, dents, scratches, fingerprints] ; ZION Museum and Archives Image ZION 9358 ; ZION 10150
Detention dam near sawmill on East Rim. 40 cubic yards of material, drains 20 acres. ; ZION Museum and Archives Image ZION 9349 ; ZION 10141
Willow 'spider' jetties near Union Pacific Sewer farm. Upper end well-silted, lower end needs additional treatment. [dents, scratches, pits] ; ZION Museum and Archives Image ZION 9347 ; ZION 10139
Tree and cable jetties on Virgin River opposite Wiley camp drainage in need of repair after heavy spring floods. ; ZION Museum and Archives Image ZION 9343 ; ZION 9367
Willow 'spider' jetties, opposite Wiley camp site. ; ZION Museum and Archives Image ZION 9340 ; ZION 9364
Willow 'spider' jetties, opposite Wiley camp drainage. Survival poor due to heavy deer browsing; endured severe floods. ; ZION Museum and Archives Image ZION 9339 ; ZION 8143
Potato Hollow check dams. ; ZION Museum and Archives Image ZION 9329 ; ZION 7472
Flood damage from down pour - 1.38-inches in one hour. High water in Oak Creek near bridge adjacent to Visitor Center employee's parking area. ; ZION Museum and Archives Image ZION 8523 ; ZION 15933
Basket s & mc rock revetment, Virgin River in a moderate flood condition. ; ZION Museum and Archives Image ZION 8371 ; ZION 13420
Basket s & mc rock revetment, Virgin River in a moderate flood condition. ; ZION Museum and Archives Image ZION 8370 ; ZION 13368
Sawmill dam, below sawmill springs, section 1, T 40 S, R 10 1/2 W- soil and moisture dam. ; ZION Museum and Archives Image ZION 8369 ; ZION 7152
Area of proposed diversion dam on the east side, Virgin River. ; ZION Museum and Archives Image ZION 8005 ; ZION 13347
Construction of retaining wall section 10b on Virgin River between Canyon Junction intersection and Court of the Patriarchs. ; ZION Museum and Archives Image ZION 7578 ; ZION 7190
Soil and moisture control revetments along Virgin River. ; ZION Museum and Archives Image ZION 7317 ; ZION 10031
Soil and moisture control and the bend at Cable Mountain showing revetments covered with sand and gravel. ; ZION Museum and Archives Image ZION 7246 ; ZION 14776
Soil and moisture control revetments along the Virgin River. ; ZION Museum and Archives Image ZION 7201 ; ZION 9803
Soil and moisture control revetments along the Virgin River. ; ZION Museum and Archives Image ZION 7157 ; ZION 10008
B&W negative of Blue Springs area with person on top of log dam. ; ZION Museum and Archives Image ZION 7144 ; ZION 10061
Basket dam #1, completed with the exception of back filling along toe of dam. ; ZION Museum and Archives Image ZION 13644 ; ZION 15933
Channel change' rock cribbing channelization work alongside the Virgin River near the South Entrance. ; ZION Museum and Archives Image ZION 13501 ; ZION 15933
Willow jetty along Virgin River near the Temple of Sinawava. Close-up view of '...willow spiders (jetties) showing method of construction, etc. Logs are planted 18 inches deep in soil.' ; ZION Museum and Archives Image ZION 13413 ; ZION 15933
Willow jetty along Virgin River near the Temple of Sinawava. '...partially completed compound willow jetty for stream bank protection. View looking downstream at 200-foot mechanical, yet living willow spiders. Entire structure is tied together and tied bac
Check dams in Potato Hollow. ; ZION Museum and Archives Image ZION 13336 ; ZION 15933
Stream erosion in Potato Hollow. Shows dramatic image of a man standing in an erosional gully. ; ZION Museum and Archives Image ZION 13335 ; ZION 15933
Civilian Conservation Corps (CCC) workers constructing stone retaining wall on Oak Creek near the utility area. ; ZION Museum and Archives Image ZION 13313 ; ZION 15933
Zion Civilian Conservation Corps (CCC) workers constructing a stone revetment on Oak Creek near the NPS utility area. ; ZION Museum and Archives Image ZION 13296 ; ZION 15933
Lower end of diversion of Virgin River to enable crew to place willow spiders for stream bank protection. ; ZION Museum and Archives Image ZION 10318 ; ZION 15933
Diversionary channel to divert Virgin River away from steep cut bank where willow spiders are placed. ; ZION Museum and Archives Image ZION 10317 ; ZION 15933
Stream bank protection along eroded stream bank, looking downstream at willow spiders along west bank of Virgin River above Court of Patriarchs. ; ZION Museum and Archives Image ZION 10315 ; ZION 15933
River control and revetments along the Virgin River near the South Campground. ; ZION Museum and Archives Image ZION 10314 ; ZION 15933