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The Conewago Canal, on the west bank of the Susquehanna River below York Haven, Pennsylvania, 11 miles (18 km) south of Harrisburg in York County, enabled late 18th and early 19th century rivercraft to safely bypass rapids at Conewago Falls. Work on the canal of less than 1 mile (1.6 km) began in 1793 and was completed in 1797. Robert Morris, a Philadelphia financier, organized the project, which was carried out by chief engineer James Brindley, the nephew of a well-known British engineer of the same name. Two lift locks overcame 19 feet (6 m) of elevation between the ends of the canal, and a guard lock blocked unwanted water, particularly during floods. Cargo could go upstream as well as down. A boat going upriver could navigate the canal in 37 minutes compared to the whole day it would take 30 or 40 men to pull it upriver along the bank. York Haven is at 40°06′39″N76°42′57″W.
The Black Mountains, a mid-Miocene formation, in Nevada are a series of rugged, arid rocky volcanic mountains ranging in elevations to 3310 ft. The range lies on the north shore of Lake Mead, at the southwest corner of the Overton Arm, about 25 mi south of Overton, Nevada.
Temescal Creek is an approximately 29-mile-long (47 km) watercourse in Riverside County, in the U.S. state of California. Flowing primarily in a northwestern direction, it connects Lake Elsinore with the Santa Ana River. It drains the eastern slopes of the Santa Ana Mountains on its left and on its right the western slopes of the Temescal Mountains along its length. With a drainage basin of about 1,000 square miles (2,600 km2), it is the largest tributary of the Santa Ana River, hydrologically connecting the 720-square-mile (1,900 km2) San Jacinto River and Lake Elsinore watersheds to the rest of the Santa Ana watershed. However, flowing through an arid rain shadow zone of the Santa Ana Mountains, and with diversion of ground water for human use, the creek today is ephemeral for most of its length, except for runoff from housing developments and agricultural return flows.
Callville Bay is a waterway on the northwestern side of Lake Mead in the U.S. state of Nevada. It has a marina and camping resort. Situated east of Las Vegas and upstream from Las Vegas Bay, it lies within the Lake Mead National Recreation Area, which was established in 1935. Its name derives from the settlement of Callville which was established in 1865 by Anson Call under a directive led by Brigham Young. Though the settlement was abandoned in 1869, and submerged under Lake Mead when the Colorado River was dammed, Callville Bay retained the name.
Callville is a former settlement of Clark County in the U.S. state of Nevada. Abandoned in 1869, it was submerged under Lake Mead when the Colorado River was dammed, Callville Bay retaining the name. At one time, it was noted to be the southernmost outpost of the Mormon settlement.
The Carrizo Creek and Carrizo Wash in California are a stream and an arroyo that the stream flows into, in San Diego County, California and Imperial County, California.
January Wash, an arroyo, tributary to El Dorado Canyon, in Clark County, Nevada. Its mouth is located at its confluence with El Dorado Canyon at an elevation of 2375 feet. Its source in the Eldorado Mountains near the Rich Hill Mine at 35°40′43″N114°50′14″W.
Boulder Canyon, originally Devils Gate Canyon, is a canyon on the Colorado River, above Hoover Dam, now flooded by Lake Mead. It lies between Clark County, Nevada and Mohave County, Arizona. It heads at western end of the Virgin River Basin of Lake Mead, at about 36°09′05″N114°32′51″W. Boulder Canyon divides the Black Mountains into the Black Mountains of Arizona, and the Black Mountains of Nevada. Its mouth is now under the eastern end of the Boulder Basin of Lake Mead, between Canyon Point in Nevada and Canyon Ridge in Arizona. Its original mouth is now underneath Lake Mead between Beacon Rock and Fortification Ridge on the southern shore in Arizona.
Chinle Creek is a tributary stream of the San Juan River in Apache County, Arizona and San Juan County, Utah. Its source is at 36°53′40″N109°44′37″W, the confluence of Laguña Creek and the Chinle Wash arroyo. Its name is derived from the Navajo word ch'inili meaning 'where the waters came out'. Its sources is in Canyon de Chelly National Monument where Canyon de Chelly and Canyon del Muerto have their confluence at an elevation of 5,616 feet at 36°08′35″N109°29′17″W. It then trends northwest to its confluence with Laguña Creek where it forms Chinle Creek, 7 miles northeast of Dennehotso, Arizona at an elevation of 4,774 feet / 1,455 meters.
Fremont Wash sometimes called Fremont Canyon in its upper reach, is a stream and a valley in the north end of Parowan Valley, in Iron County, Utah. Its mouth lies at its confluence with Little Salt Lake at an elevation of 5,686 feet / 1,733 meters. Its head is found at 38°07′46″N112°34′36″W, the mouth of Fremont Canyon, an elevation of 6,476 feet / 1,974 meters.
California Wash is an arroyo tributary to the Muddy River, in Clark County, Nevada. Its mouth is at its confluence with the Muddy River over a mile southwest of Moapa and a mile and a half west of Glendale, Nevada. Its source is at an elevation of 3320 feet at the southwestern end of the Muddy Mountains, at 36°17′14″N114°48′09″W. From there it drains northeastward to its mouth on the Muddy River.
Walker Creek is a stream in Apache County, Arizona. Its mouth is at an elevation of 4,688 feet / 1,429 meters at its confluence with Chinle Creek. Its source is located at 36°41′28″N109°15′04″W, the confluence of Alcove Canyon and Tah Chin Lini Canyon in the Carrizo Mountains, from which it flows west and northwest to Chinle Creek at 36°57′42″N109°41′35″W. Hogansaani Spring, a tributary, is located on the south side of Walker Creek, at an elevation of 5,102 feet (1,555 m), midway downstream Walker Creek to its confluence with Chinle Creek.
Walker Canyon is a canyon in the Temescal Mountains, in Riverside County, California. It lies divides Alberhill Summit, on the west and the balance of the range to its east. Temescal Creek flows northward through the canyon from where it heads at 33°42′33″N117°21′43″W in Warm Springs Valley into the upper reach of the Temescal Valley near Alberhill, California. Coming from the Temescal Mountains to the east, Gavilan Wash has its confluence with Walker Canyon near mid way along its length, and Alberhill Canyon has its confluence with Walker Canyon at its mouth.
Callville Wash is an ephemeral stream or wash in Clark County, Nevada. It was named for Callville the riverport settlement founded in 1866, at its mouth where it had its original confluence with the Colorado River.
Cottonwood Spring is a spring in the Black Mountains, between the west end of Pinto Valley and Callville Wash, at an elevation of 2205 feet.
Boulder Wash is an ephemeral stream or wash in Clark County, Nevada. Its mouth is at its confluence with the Boulder Wash Cove of Lake Mead at an elevation 1,276 feet / 389 meters at when Lake Mead is at its full level. Currently as the reservoir is at a much lower level its mouth is found at approximately 36°10′07″N114°33′07″W. Its source is at 36°13′36″N114°31′22″W at an elevation of 2,841 feet / 866 meters in the Black Mountains. It flows down a canyon into the upper Pinto Valley southwestward before turning southeastward to Boulder Wash Cove.
Gale Hills, formerly considered part of the Muddy Range (1879), and later the South Muddy Mountains (1980s), are a range of hills southwest of the Muddy Mountains and about three miles north of the Boulder Basin of Lake Mead, in Clark County, Nevada. It is bounded on the east by Callville Wash; on the south by the Black Mesa lava flows; on the northwest by the valley of Gypsum Wash. Its highpoint is at 36°15′32″N114°43′12″W which lies at 3,756 feet / 1,145 meters.
Gypsum Wash is an ephemeral stream or wash in Clark County, Nevada. Gypsum Wash was originally a tributary of Las Vegas Wash before the formation of Lake Mead which submerged their confluence under Las Vegas Bay. Due to the lowering of the reservoir over recent years Gypsum Wash is once again a tributary of Las Vegas Wash, now exposed at 36°07′04″N114°50′54″W at an elevation of 1085 feet. When Las Vegas Bay is at its full level, Gypsum Wash flows into Lower Gypsum Wash Cove at 36°07′43″N114°51′26″W at an elevation of 1,204 feet / 367 meters.
Boulder Wash Cove is a cove in Lake Mead, in Clark County, Nevada. Boulder Wash for which the cove is named has its mouth in the cove at an elevation of 1,204 / 367 meters when the reservoir is at its full level.
Boulder Basin is the westernmost of the three basins occupied by the Lake Mead reservoir and lies within the boundaries of Clark County, Nevada and Mohave County, Arizona. It includes the area between Hoover Dam and the mouth of Boulder Canyon at Auxiliary Point. When the reservoir is full it reaches an elevation of 1,204 feet / 367 meters. It includes Las Vegas Bay, Swallow Bay, Callville Bay and Hamblin Bay.
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Coordinates: 36°09′13″N114°43′23″W / 36.15361°N 114.72306°W