The San Luis Valley is a region in south-central Colorado with a small portion overlapping into New Mexico. The valley is approximately 122 miles (196 km) long and 74 miles (119 km) wide, extending from the Continental Divide on the northwest rim into New Mexico on the south. It contains 6 counties and portions of 3 others. It is an extensive high-elevation depositional basin of approximately 8,000 square miles (21,000 km2) with an average elevation of 7,664 feet (2,336 m) above sea level. The valley is a section of the Rio Grande Rift and is drained to the south by the Rio Grande, which rises in the San Juan Mountains to the west of the valley and flows south into New Mexico. The San Luis Valley has a cold desert climate but has substantial water resources from the Rio Grande and groundwater.
The Sangre de Cristo Range is a mountain range in the Rocky Mountains in southern Colorado in the United States, running north and south along the east side of the Rio Grande Rift. The mountains extend southeast from Poncha Pass for about 75 mi (121 km) through south-central Colorado to La Veta Pass, approximately 20 mi (32 km) west of Walsenburg, and form a high ridge separating the San Luis Valley on the west from the watershed of the Arkansas River on the east. The Sangre de Cristo Range rises over 7,000 ft (2,100 m) above the valleys and plains to the west and northeast.
Custer County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 4,704. The county seat is Westcliffe.
Westcliffe is a statutory town that is the county seat of Custer County, Colorado, United States. At the 2020 U.S. Census, the population was 435.
Great Sand Dunes National Park and Preserve is an American national park that conserves an area of large sand dunes up to 750 feet (230 m) tall on the eastern edge of the San Luis Valley, and an adjacent national preserve in the Sangre de Cristo Range, in south-central Colorado, United States. The park was originally designated Great Sand Dunes National Monument on March 17, 1932, by President Herbert Hoover. The original boundaries protected an area of 35,528 acres. A boundary change and redesignation as a national park and preserve was authorized on November 22, 2000, and then established on September 24, 2004. The park encompasses 107,342 acres while the preserve protects an additional 41,686 acres for a total of 149,028 acres. The recreational visitor total was 527,546 in 2019.
The Wet Mountain Valley is a high elevation mountain valley mostly located in Custer County but extending southward into Huerfano County in south-central Colorado. Westcliffe and Silver Cliff are the two towns in the valley which is mostly devoted to cattle ranching.
The Sangre de Cristo Mountains are the southernmost subrange of the Rocky Mountains. They are located in southern Colorado and northern New Mexico in the United States. The mountains run from Poncha Pass in South-Central Colorado, trending southeast and south, ending at Glorieta Pass, southeast of Santa Fe, New Mexico. The mountains contain a number of fourteen thousand foot peaks in the Colorado portion, as well as several peaks in New Mexico which are over thirteen thousand feet.
The Baca National Wildlife Refuge is a 78,697-acre (31,848 ha) United States National Wildlife Refuge located in southern Colorado. It is within the Sangre de Cristo National Heritage Area.
Sangre de Cristo Ranches is an unincorporated community located near Fort Garland in Costilla County, Colorado, United States. The U.S. Post Office at Fort Garland serves Sangre de Cristo Ranches postal addresses.
Sangre de Cristo National Heritage Area is a federally designated National Heritage Area in the south central portion of the U.S. state of Colorado. The heritage area includes the San Luis Valley and portions of the Sangre de Cristo Range. The region combines influences of Anglo-American, Hispano-American and Native American influences. It also includes portions of the upper Rio Grande valley.
The San Luis Valley Conservation Area is a proposed "landscape scale" National Conservation Area in south-central Colorado and far northern New Mexico which would be administered by the U.S. Fish and Wildlife Service:
Trinchera Creek is a tributary of the Rio Grande in Costilla County, Colorado in the United States. It flows west from a source in the Sangre de Cristo Mountains to a confluence with the Rio Grande.
Sanchez Reservoir lies in far southcentral Colorado, west of the Sangre de Cristo Mountains in Costilla County. Its inflows include Ventero Creek and the Sanchez Canal, a diversion canal that takes water from Culebra Creek and two other creeks.
Costilla Creek is a tributary of the Rio Grande in Colorado and New Mexico.
Sangre de Cristo Creek is a stream in Costilla County, Colorado. It starts atop La Veta Pass in the Sangre de Cristo Mountains. The creek flows alongside Highway 160 as it descends from the top of the pass into the San Luis Valley.
Grape Creek is a tributary of the Arkansas River that flows through Custer and Fremont counties in South-Central Colorado. The creek drains much of the Wet Mountain Valley, located between the Sangre de Cristo Mountains and the Wet Mountains in Custer County.
Smith Reservoir is located in Costilla County, Colorado, south of Blanca in the San Luis Valley. The reservoir is owned by the Trinchera Irrigation Company.
The Sangre de Cristo Land Grant in the San Luis Valley of southern Colorado and northern New Mexico consists of 1,000,000 acres (4,000 km2) of mostly arid land. It was awarded by the government of New Mexico to the Beaubien family in 1843. The land grant was originally settled by Hispanics from New Mexico. Since the incorporation of the area of the grant into the United States in 1848, legal disputes between the descendants of the Hispanic settlers and Anglo ranchers about ownership of and access to some of the land in the grant area have been frequent and continued into the 21st century.
Shirley Romero Otero is a Chicana activist who co-founded the Land Rights Council in 1977 to regain the rights for heirs of the Sangre de Cristo Land Grant. She is an educator and leader in the San Luis Valley region. She is the director of the Move Mountains Youth Project and sits on the board of directors of the Acequia Institute.
