{"status": "Complete", "organizations": [], "links": [], "collections": [{"hidden": false, "name": "Southeast Alaska Fish Habitat Partnership (SEAKFHP)", "description": "This collection contains projects, data and reports from the Southeast Alaska Fish Habitat Partnership (www.seakfhp.org), our partner members and other sources creating a repository of available watershed assessment information, including restoration plans and other publications to inform habitat conservation interests across Southeast Alaska. "}], "description": "Holgate Creek is a small perennial stream located in Haines, Alaska. Alaska Department of Fish and Game designates the stream as #115-32-094 (One-mile Creek). The stream is a tributary of the Chikat River and joins the Chilkat northwest of Pyramid Island. The stream supports several species of fish, the most abundant being Coho salmon (Onchorhynchus kisutch) and cutthroat trout (Onchorhynchus clarkii). Dolly Varden (Salvelinus malma) as well as sticklebacks and sculpin have also been captured in the stream. Fish passage into the stream may be a limiting factor to fish populations. Several culverts along the stream have been identified as possible barriers limiting fish access to the stream. In 2005-2006 the Takshanuk Watershed Council (TWC) conducted a baseline assessment and monitoring project on Holgate Creek, funded by the US Fish & Wildlife Service (FWS). Their report, \u201cHolgate Creek Assessment and Monitoring Project, December 2006\u201d highlights several issues and opportunities, one being fish passage:\r\nFish passage may be a concern, particularly in times of low flow in the creek. The culvert under Mud\r\nBay Road is considered to be undersized by Fish and Game personnel (Ben Kirkpatrick pers comm.). The\r\ncurrent fish ladder was installed as partial compensation for this but the tendency of the cobbles within it\r\nto wash out calls into question its effectiveness. Recommendation: Survey these sites and use passage\r\nmodels to determine if they are indeed problems. Approach ADOT and landowners with solutions.\r\nAs a result of this, TWC under additional funding from FWS hired Natural Channel Design to conduct\r\nfish passage evaluation. This assessment focuses on the most downstream culvert which passes under\r\nMud Bay Road at the mouth of Holgate Creek using the following protocols:\r\n\u2022 Tongass Road Condition Survey Protocol (GREEN-GRAY-RED)\r\n\u2022 Tier I Stream Simulation Design (MOA between ADFG and ADOT)\r\n\u2022 Hydraulic/critical velocity Evaluation\r\nAdult cutthroat trout and Coho salmon as well as juvenile Coho are the target species for movement into the stream. Fish passage issues generally focus on the ability of returning adult salmonids to migrate upstream to spawning beds during the summer months. However, juvenile Coho have been observed in the stream in the fall and their ability to move up and downstream may also be important. This pattern complicates fish passage considerations. While depth of flow and physical barriers are often the limiting factors for summer returning adult fish, the high flows characteristic of the fall season in this region make culvert flow velocities a critical parameter as well.\r\nThis report assesses the performance of the existing culvert and provides recommendations to improve fish passage. The culvert was evaluated for the following characteristics. \r\n\u2022 Sufficient fish passage for returning adult cutthroat and Coho during the summer;\r\n\u2022 Sufficient fish passage for Coho salmon fry in the fall;\r\n\u2022 Adequate flood flow conveyance capacity; and\r\n\u2022 Adverse impacts to stream function.", "end_date": null, "title": "Culvert Assessment and Recommendations Fish Passage Evaluation Holgate Creek Haines, Alaska", "other_contacts": [], "iso_topics": [], "tags": [], "bounds": [{"geom": "{\"type\":\"Point\",\"coordinates\":[-135.45620746320586,59.23333858714127]}", "type": "Attachment"}], "start_date": null, "regions": [], "other_agencies": "", "data_types": [], "archived_at": null, "primary_contacts": [], "type": {"color": "#c09853", "name": "Project", "description": "catalog record for projects with no associated data/observation files"}, "slug": "culvert-assessment-and-recommendations-fish-passage-evaluation-holgate-creek-haines-alaska", "attachments": [{"category": "Geojson", "file_name": "imported_locations", "description": "gLynx locations", "file_size": 158}, {"category": "Primary Thumbnail", "file_name": "Holgate Ck Culvert Assess Haines 2008.pdf", "description": "Culvert Assessment and Recommendations Fish Passage Evaluation Holgate Creek Haines, Alaska", "file_size": 731164}]}