Hildebrand Ranch

Collegiate Academy of Colorado is a small charter school located in the Ken Caryl area of unincorporated Jefferson County, Colorado, United States. It is a kindergarten through twelfth grade charter school with approximately 480 students (2009–10 enrollment). The school has a postal address of 8420 S. Sangre de Cristo Road, Littleton, Colorado, 80127. It opened in 1994. The school has its own athletic field which it rents out for other uses. It has a gym, a cafeteria, and a playground. Its mascot is a wolf, and the school colors are crimson and dark green.

Ken Caryl, commonly known as Ken Caryl Ranch, is an unincorporated community and a census-designated place (CDP) located in and governed by Jefferson County, Colorado, United States. The CDP is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area. The population of the Ken Caryl CDP was 33,811 at the United States Census 2020. The Ken Caryl Ranch Metropolitan District and the Ken Caryl Ranch Water District provide services. The Littleton post office (Zip code 80127) serves the area.

Chatfield State Park is a state park located in Douglas and Jefferson counties of Colorado, United States. The park centers on Chatfield Reservoir, a 1,423 acre surface area lake fed by the South Platte River and two other creeks, including Plum Creek.

Chatfield Dam and Reservoir is a dam and artificial lake located on the South Platte River, south of Littleton, Colorado. The dam and reservoir were built by the United States Army Corps of Engineers as a response to the disastrous flood of 1965. In addition to its primary purpose of flood control, it serves as one of many water supply reservoirs for the city of Denver, Colorado. In 1966, the U.S. Atomic Energy Commission projected a total federal cost of $74 million. Construction of the project was begun in 1967 and the dam was completed in 1975. The massive breastworks of the dam measure approximately 13,136 feet (4,004 m) in length with a maximum height of the dam of 135 feet (41 m) above the streambed. The normal depth of the lake is 59 feet (18 m) at its deepest point. This means the dam towers 88 feet (27 m) above the mean surface of the reservoir. The lake drains an area of more than 3,000 square miles (8,000 km2). The 1,500 acre (6 km2) lake has a conservation storage capacity of 27,000 acre⋅ft (0.033 km3) with a flood-control pool of over 350,000 acre⋅ft (0.43 km3)

Plum Creek is a stream in Douglas County, Colorado, United States. It is formed by the confluence of West Plum Creek and East Plum Creek near the intersection of North Perry Park Road and Manhart Avenue in Sedalia. Prior to the construction of Chatfield Reservoir in the 1960s and 1970s, Plum Creek merged with the South Platte River in far northern Douglas County. Now, however, it empties into the southern side of the reservoir itself, just west of Santa Fe Drive and within the boundaries of Chatfield State Park. The Chatfield Storage Reallocation Project, scheduled to start in fall, 2017, will add capacity to Chatfield Reservoir and raise its level about 12 feet. This higher reservoir level will cause the mouth of the creek to move about 7,000 feet further upstream. As part of the expansion project, a mitigation project will also be undertaken to deal with increased sediment deposition and channel erosion along Plum Creek caused by increased urban runoff.

Chatfield High School is a high school located in an unincorporated area of Jefferson County near Littleton, Colorado, United States. It is part of the Jefferson County Public Schools system.

Columbine is census-designated place (CDP) in and governed by Jefferson and Arapahoe counties in Colorado, United States. The CDP is a part of the Denver metropolitan area. Located primarily in Jefferson County, Columbine lies immediately south of Denver. The population of the Columbine CDP was 25,229 at the 2020 census. The community lies in ZIP code 80123.

South Valley Park is Jefferson County Open Space located in Jefferson County west of Ken Caryl, Colorado. The 909-acre (3.68 km2) Front Range park established in 1999 has 8 miles (13 km) of hiking trails. Horse and bicycle travel is allowed on 7 miles (11 km). Facilities include a parking lot, restrooms, picnic sites. The Fountain and Lyons Formations pierce the meadows and scrubland of the park. Rocky mountain juniper and Gambel oak are found around the rock spires. Commonly seen wildlife includes mule deer, elk. Common birds include steller's jay. The park has been occupied by humans as early as 10,000 years ago. The earliest evidence is a 10,000-year-old Folsom spear point found in the park. Numerous fire pits and stone tools have also been found in the area. A human skull found at a burial site has been carbon dated to approximately 1,900 years ago.

The Columbine High School massacre, commonly referred to as Columbine, was a school shooting and attempted bombing that occurred on April 20, 1999, at Columbine High School in Columbine, Colorado, United States. The perpetrators, twelfth-grade students Eric Harris and Dylan Klebold, murdered twelve students and one teacher. Ten of the twelve students killed were in the school library, where Harris and Klebold subsequently committed suicide. Twenty-one additional people were injured by gunshots, and gunfire was also exchanged with the police. Another three people were injured trying to escape. The Columbine massacre was the deadliest mass shooting at a K-12 school in U.S. history, until it was surpassed by the Sandy Hook Elementary School shooting in December 2012, and later the Robb Elementary School shooting in May 2022, and the deadliest mass shooting at a high school in U.S. history until the Parkland high school shooting in February 2018. Columbine still remains both the deadliest mass shooting and the deadliest school shooting to occur in the U.S. state of Colorado. Harris and Klebold, who planned for at least a year and hoped to have a large number of victims, intended for the attack to primarily be a bombing and only secondarily a shooting. But when several homemade bombs they planted in the school failed to detonate, the pair launched a shooting attack. Their motive remains inconclusive. The police were slow to enter the school and were heavily criticized for not intervening during the shooting. The incident resulted in the introduction of the immediate action rapid deployment (IARD) tactic, which is used in active-shooter situations, and an increased emphasis on school security with zero-tolerance policies. Debates and moral panic were sparked over American gun culture and gun control laws, high school cliques, subcultures (e.g. goths), outcasts, and school bullying, as well as teenage use of pharmaceutical antidepressants, the Internet, and violence in video games and movies. Many makeshift memorials were created after the massacre, including ones employing victims Rachel Scott's car and John Tomlin's truck. Fifteen crosses for the victims and the shooters were erected on top of a hill in Clement Park. The crosses for Harris and Klebold were later removed following controversy. Planning for a permanent memorial began in June 1999, and the resulting Columbine Memorial opened to the public in September 2007. The shooting has inspired dozens of copycat killings, dubbed the Columbine effect, including many deadlier shootings across the world. The word "Columbine" has become a byword for school shootings.

Columbine High School (CHS) is a public high school in Columbine, Colorado, United States, in the Denver metropolitan area. It is part of the Jefferson County Public Schools district.In 1999, it became the scene of an infamous mass shooting, where 12 students and one teacher were murdered by senior students Eric Harris and Dylan Klebold before the pair committed suicide.

Waterton, Colorado is a populated place located along the South Platte River in Platte Canyon (also known as Waterton Canyon) of Jefferson County, Colorado. Cañon Spur in Waterton was a Denver, South Park and Pacific Railroad (DSP&P) station. It was a settlement named Enterprise, with a post office from 1879 to 1881. Its name was changed to Platte Cañon, legally changed to Watertown in 1916, and is now known as Waterton. It is located near Kassler, another DSP&P station, established in 1872.

Southwest Plaza is an enclosed shopping mall in unincorporated Jefferson County, Colorado, immediately south of Denver. Littleton, Colorado is commonly indicated in the mall's postal address because its ZIP code is primarily associated with that city, which lies some two miles east. The mall has two levels with over 150 stores and a food court. The anchor stores are Dillard's, Dick's Sporting Goods, Round 1 Entertainment, and JCPenney. There are 2 additional anchor spaces, with one serving as a Macy's fulfillment center and a vacant anchor spot last occupied by Sears.