Cedar Lake evidence timeline
Dates are labeled according to their source support. Reported dates remain subject to confirmation from the underlying government files.
OWRB's published inventory lists Cedar Lake Dam completed in 1959 and the owner as Western Sportsman Club.
A gypsum-related subsurface collapse reportedly drained the lake rapidly.
Supplemental groundwater pumping reportedly ceased.
Coffee Dam 5 reportedly completed.
Coffee Dam 6 reportedly completed; a Cedar Lake Dam breach was also reported.
Complaint 2505131327 prompted OWRB review of an upstream dam.
OWRB inspected Dam 6; the agency later estimated it at 33 feet and 119 acre-feet and required an application.
OWRB inspected Dams 1-5 and found all five jurisdictional based on height or maximum storage.
OWRB issued an action-required notice for Dams 1-5.
Filed Statements of Assurances identified Dam 4 as OK30691 and Dam 5 as OK30692.
Stream-water applications 2026-0010 and 2026-0012 through 2026-0015 entered the record.
OWRB considered and deferred a proposed informal consent order.
OWRB responded to Web Inquiry 3078 with a 103-PDF Box production and represented it as complete; review identified expressly requested categories that were not located.
The project submitted a twelve-item completeness follow-up. OWRB's written reply said it would resend the Cedar Lake presentation through Box but did not provide item-by-item answers.
OWRB verifies a 9:30 a.m. meeting on its schedule; location and final agenda remain pending.