# Stigler Lake Dam Rehabilitation Project Publisher: CapexCue Canonical dossier: Dossier reference: release 1 (a3b81154-1cde-4c64-a8fa-5dc1020b41f1) Released project intelligence Oldest supporting observation: 2026-10-02T19:27:37.509301+00:00 Dossier released: 2026-10-16T12:51:54.072497+00:00 Source report dates and capture dates are listed per fact below; neither establishes an event date. ## Project summary The Stigler Lake Dam Rehabilitation Project is proposed by the City of Stigler in Haskell County, Oklahoma. A June 2025 FONSI describes planned seepage-control and slope work, spillway rehabilitation, and a proposed raw-water pipeline to maintain treatment-plant operation during dam construction. Reclamation reports providing project funding and that the City received a grant through its Drought Resiliency Program. The FONSI reports USACE authorization dated May 23, 2025, and requires the City to obtain an OKR10 Construction Stormwater Permit before construction. ## Evidence limits and unknowns - The June 2025 FONSI does not state whether construction has started, is ongoing, or has been completed. - The FONSI requires an OKR10 Construction Stormwater Permit before construction but does not state whether it has since been obtained. - The FONSI identifies FNI's 2023 design contract but does not identify a construction contractor or report procurement status or packages. - The source gives no grant amount, total project cost, or funding disbursement details. - The FONSI describes the pipeline connection both as connecting an existing waterline and as a new segment from an existing raw-water pipeline; it does not clarify the precise configuration. - The supplied evidence covers the June 2025 FONSI; it references an attached or incorporated environmental assessment, whose full text is not separately included in the supplied pages. Graphical content was not interpreted (u0001–u0008; EA reference at u0003). - The FONSI reports permit and consultation determinations as of its text but does not establish whether requirements or conditions have changed since June 2025. Current purchasing availability: unknown. Source-dated plans do not establish current progress or available supplier packages. ## Project metadata Country: United States Region: North America Physical assets: Drinking Water Derived from the exact released evidence; unresolved fields remain unclassified. ## Project category Water and environment Derived from the reviewed scope statement; delivery stage remains unclassified. The proposed action is rehabilitation of Stigler Lake Dam and an associated raw-water pipeline for the Stigler Water Treatment Plant during dam construction. The FONSI describes connecting an existing waterline to the plant, and also describes a new pipeline segment running from an existing raw-water pipeline to the plant. It does not further clarify the precise configuration of that connection. Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/gp/nepa/stigler_fonsi.pdf | published unknown | observed 2026-10-02T19:27:37.509301+00:00 Project overview Oldest decisive evidence: 2026-10-02T19:27:37.509301+00:00 Newest evidence: 2026-10-02T19:27:37.509301+00:00 Knowledge reviewed: 2026-10-16T12:51:53.157825+00:00 Publication reviewed: 2026-10-16T12:51:53.157825+00:00 ## Name Stigler Lake Dam Rehabilitation Project Status: reported Attribution: US Bureau of Reclamation own-government project narrative Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/gp/nepa/stigler_fonsi.pdf | published unknown | observed 2026-10-02T19:27:37.509301+00:00 ## Scope The proposed action is rehabilitation of Stigler Lake Dam and an associated raw-water pipeline for the Stigler Water Treatment Plant during dam construction. The FONSI describes connecting an existing waterline to the plant, and also describes a new pipeline segment running from an existing raw-water pipeline to the plant. It does not further clarify the precise configuration of that connection. Status: planned Attribution: US Bureau of Reclamation own-government project narrative Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/gp/nepa/stigler_fonsi.pdf | published unknown | observed 2026-10-02T19:27:37.509301+00:00 ## Activity Proposed dam works include a soil-cement bentonite cutoff wall seated in underlying sandstone to control seepage; a toe drain and compacted fill to flatten the downstream slope to 3H:1V; compacted fill to flatten the upstream slope to 2H:1V; and rock riprap for erosion protection. The spillway rehabilitation is within the existing footprint. The source describes an existing 74-foot-long concrete-lined channel and 72-foot-wide concrete weir, with the rehabilitated weir remaining at elevation 625.9 feet msl. The improved channel is specified with a 12-inch concrete slab, 64-foot bottom width, and 4H:1V side slopes. The existing dam is described as an approximately 1,860-foot earthen embankment with a maximum height of 40 feet. Status: planned Attribution: US Bureau of Reclamation own-government project narrative Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/gp/nepa/stigler_fonsi.pdf | published unknown | observed 2026-10-02T19:27:37.509301+00:00 ## Delivery During dam construction, the treatment plant would be unable to take water from Stigler Lake. The proposed 12-inch-diameter pipeline would convey raw water approximately 5,135 feet from an existing pipeline originating at Lake John Wells directly to the treatment plant to maintain its operation. The source does not report that construction has commenced or been completed. Status: planned Attribution: US Bureau of Reclamation own-government project narrative Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/gp/nepa/stigler_fonsi.pdf | published unknown | observed 2026-10-02T19:27:37.509301+00:00 ## Location The project area is in Haskell County, Oklahoma, at 35.241258°N, -95.113529°W. Status: reported Attribution: US Bureau of Reclamation own-government project narrative Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/gp/nepa/stigler_fonsi.pdf | published unknown | observed 2026-10-02T19:27:37.509301+00:00 ## Developer The City of Stigler is the project proponent identified as proposing the dam rehabilitation and associated waterline connection. Status: planned Attribution: US Bureau of Reclamation own-government project narrative Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/gp/nepa/stigler_fonsi.pdf | published unknown | observed 2026-10-02T19:27:37.509301+00:00 ## Contractor The City contracted Freese and Nichols, Inc. (FNI) in 2023 to design improvements. The source does not identify a construction contractor. Status: reported Attribution: US Bureau of Reclamation own-government project narrative Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/gp/nepa/stigler_fonsi.pdf | published unknown | observed 2026-10-02T19:27:37.509301+00:00 ## Regulatory Reclamation issued a FONSI, finding that the project is not a major Federal action significantly affecting the human environment and that an Environmental Impact Statement is not required; the EA considered No Action and Proposed Action alternatives. The source reports USACE authorization on May 23, 2025, for discharge of fill material into waters of the United States under Nationwide Permits 3 and 58, and states that Section 404 requirements and ODEQ-approved Section 401 Water Quality Certification conditions apply. The City is required to obtain an OKR10 Construction Stormwater Permit before construction and to develop and implement a stormwater pollution prevention plan. On January 8, 2025, SHPO agreed with the assessment that there are no known historic properties affected within the APE; on February 10, 2025, OAS agreed with findings concerning the absence of effects on prehistoric archaeological resources. These are qualified findings: if historic properties or resources are encountered during construction, the City must halt work in their vicinity and notify Reclamation; work may resume only after Reclamation completes SHPO consultation and any appropriate protective measures are implemented. The FONSI reports these determinations and requirements but does not establish the current status of every required permit or condition. Status: reported Attribution: US Bureau of Reclamation own-government project narrative Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/gp/nepa/stigler_fonsi.pdf | published unknown | observed 2026-10-02T19:27:37.509301+00:00 ## Next Milestone The FONSI requires the City to obtain an OKR10 Construction Stormwater Permit before beginning construction. It does not establish whether the permit has since been obtained or give a construction start date. Status: planned Attribution: US Bureau of Reclamation own-government project narrative Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/gp/nepa/stigler_fonsi.pdf | published unknown | observed 2026-10-02T19:27:37.509301+00:00 ## Financing Stage The City applied for and received a federal grant through Reclamation’s Drought Resiliency Program, and Reclamation says it is providing project funding. The source gives no grant amount, disbursement details, or total project cost. Status: reported Attribution: US Bureau of Reclamation own-government project narrative Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/gp/nepa/stigler_fonsi.pdf | published unknown | observed 2026-10-02T19:27:37.509301+00:00 ## Cite this dossier CapexCue — Stigler Lake Dam Rehabilitation Project — dossier released 2026-10-16T12:51:54.072497+00:00, release 1 (a3b81154-1cde-4c64-a8fa-5dc1020b41f1) — https://capexcue.com/projects/stigler-lake-dam-rehabilitation-project-ce39731cacccdf02/. For current information and later dossier updates, visit . This file records the release identified above; the current dossier may change.