A driver from Tahlequah was found dead Sunday, two days after their car veered off State Highway 100 and plunged 30 to 40 feet into Lake Tenkiller, according to the Oklahoma Highway Patrol. The vehicle departed the roadway to the left just before a bridge east of State Highway 82 near Caney Ridge Marina on Friday, sending the car off a cliff and into the water below. The driver, who was the only person inside the vehicle, was unable to escape.
According to KOCO, OHP reported that the driver was heading eastbound on State Highway 100 on Friday when the car left the road. Investigators believe the driver's inability to escape the sinking vehicle was possibly due to injuries sustained in the plunge, though the agency has not detailed the exact cause of the roadway departure. The driver's name has been withheld pending the ongoing investigation, per OHP.
Search crews located and recovered the body from the lake on Sunday, two days after the crash, OHP reported. The stretch of highway where the car went off the road sits near a spillway bridge and the junction with State Highway 82, close to where the Illinois River feeds into the lake near Caney Ridge Marina, according to the marina's own description of the area.
A Lake Known for Sudden Depth and Steep Bluffs
Lake Tenkiller, formally known as Tenkiller Ferry Lake, was formed between 1947 and 1952 when the U.S. Army Corps of Engineers dammed the Illinois River, submerging the original townsite of Cookson and creating a 12,900-acre reservoir now ranked as the sixth-largest lake in Oklahoma by water capacity, per the Corps' own historical account. The lake reaches a maximum depth of 132.7 feet and is lined by more than 130 miles of shoreline dominated by steep rock bluffs, according to A-Z Animals. Those cliff drop-offs create abrupt depth changes close to shore, conditions that have complicated water rescues and recoveries at the lake before.
In June 2018, an 18-year-old Muskogee man drowned after jumping from a 15-foot cliff into the lake and was later found by divers resting on an underwater rock ledge 11 feet below the surface, KFSM-TV 5NEWS reported at the time. That kind of submerged terrain has historically forced search efforts to pause overnight due to darkness and poor visibility in the water.
Highway 100 Has Seen Fatal Runoffs Before
This is not the first fatal single-vehicle crash along this same stretch of State Highway 100 in Cherokee County. In a crash reported by Hoodline in May, a 17-year-old Cookson driver died after their vehicle veered off the highway, climbed an embankment, struck a tree, and rolled onto its roof. The road's narrow stretches and steep roadside terrain have made it a recurring site of single-vehicle runoff crashes.
The highway is also in the middle of infrastructure work nearby. The Oklahoma Department of Transportation awarded a contract exceeding $7 million for the demolition and replacement of the Highway 100 spillway bridge over Tenkiller Dam, with construction continuing through the year, according to the U.S. Army Corps of Engineers Tulsa District. It remains unclear whether that construction or any other roadway or environmental factor played a role in Friday's crash; OHP has not addressed the specific cause of the vehicle leaving the roadway.
Marine Patrols and Emergency Response on the Lake
OHP's Troop W Marine Enforcement Division, which handles both boating enforcement and underwater search-and-recovery operations across the state's lakes, ran a safety saturation patrol on Lake Tenkiller in July, contacting 145 vessels and 479 people, the agency said on Facebook. The division also coordinates with federal lake managers; a retired OHP Marine Enforcement trooper was awarded the Public Service Commendation Medal by the Corps' Tulsa District in June for 26 years of joint lake safety and emergency vessel training across northeastern Oklahoma lakes, including Tenkiller.
Emergency response at the lake has drawn on multiple agencies before. In August 2024, a nighttime collision between two vessels near Goat Island injured a passenger and required an emergency helicopter airlift to a Tulsa hospital, according to OKW News. Rescues on Tenkiller typically rely on joint responses between OHP, Cherokee Nation EMS, and local fire departments.
Tahlequah, the capital of the Cherokee Nation and the driver's hometown, sits roughly 10 to 15 miles north of Lake Tenkiller and Caney Ridge Marina, making the lake a common destination for area residents. OHP's investigation into Friday's crash remains ongoing, and the agency has not released further details on what caused the vehicle to leave the roadway.
