District Environmental Data Resources
Authoritative water temperature datasets, salmon escapement reports, Northern Pike suppression telemetry, and hydrologic assessments for Western Cook Inlet.
Explore Real-Time Field Data & Layer Metadata
Access TTCD's 14 authoritative geospatial layers including active stream temperature loggers, Northern Pike suppression netting sites, salmon fish weirs, anadromous streams, culvert fish passage assessments, and high-tunnel agricultural plots.
Salmon Habitat, Escapement & Fisheries Biology
Escapement surveys, sonar counts, weirs, and freshwater habitat assessments on West Cook Inlet salmon systems.
Susitna River Sockeye Salmon Action Plan
Comprehensive stock status review identifying Northern Cook Inlet sockeye stocks of yield concern and rehabilitation measures.
Susitna River Chinook Salmon Run Reconstruction & Escapement Goals
Detailed statistical run reconstruction evaluating historical escapement thresholds and harvest rates.
West Cook Inlet (Theodore & Lewis Rivers) Chinook & Coho Escapement Studies
Aerial helicopter and ground surveys quantifying adult spawner escapement across the Theodore, Lewis, and Beluga rivers.
Alaska Anadromous Waters Catalog (AWC) Stream Nominations
TTCD field nominations adding miles of previously unmapped juvenile rearing tributaries to official statutory protection.
Invasive Northern Pike & Aquatic Weed Suppression
Operational suppression plans, lake eradication telemetry, and ecological impact research.
Introduced Northern Pike Consumption of Salmonids in Southcentral Alaska
Stomach content analysis and bioenergetics modeling quantifying the millions of juvenile salmon consumed annually by pike.
Shell Lake Sockeye Salmon Rehabilitation Progress Report
Multi-year gillnet suppression operations at Shell Lake restoring devastated sockeye spawning runs.
Operational Plan: Threemile Lake Pike Suppression & Chuitbuna Lake Assessment
Field execution protocol for deep-water gillnetting, fyke netting, and native fish salvage in the Tyonek area.
Elodea Mediates Juvenile Salmon Growth by Altering Freshwater Physical Structure
Laboratory experiment demonstrating how dense invasive Elodea beds reduce salmon fry foraging efficiency and dissolved oxygen.
Water Temperature Monitoring & Limnology
Thermal profiles, continuous stream logger networks, and water quality baselines.
Cook Inlet Stream Temperature Monitoring Network
Access interactive temperature loggers installed across Tyonek streams tracking climate warming and thermal refugia.
Index to Limnological Data for Southcentral Alaska Lakes
Comprehensive database of water transparency (Secchi depth), nitrogen, phosphorus, and dissolved solids across regional lakes.
Macroinvertebrate & Diatom Biological Assessment Indices for Cook Inlet
Benthic macroinvertebrate sampling establishing pristine bioassessment reference benchmarks for Tyonek streams.
Subsistence, Wildlife & Marine Mammals
Cook Inlet beluga whale co-management research, moose population dynamics, and household harvest studies.
Relationship Between Native Village of Tyonek and Beluga Whales in Cook Inlet
Documents historic and contemporary Tebughna traditional knowledge of Cook Inlet beluga whale pods, feeding areas, and habitat usage.
Moose Management Report & Plan: GMU 16A & 16B
Population censuses, bull-to-cow ratios, and calf survival surveys evaluating predator control and harvest allocations in Tyonek.
Tyonek Area Watershed Action Plan
Foundational watershed protection plan setting district restoration priorities, road-stream crossing upgrades, and wetland protections.
Agriculture & Coastal Climate Resilience
High-tunnel cold climate production metrics, soil amendments, and coastal bluff erosion analysis.
Tyonek Grown Evaluation Report (Final)
Examines seasonal crop yields, nutritional improvements, Tebughna School lunch incorporation, and community food sovereignty.
Climate Change Adaptation in Pacific Northwest & Alaska Agriculture
Analysis of extended frost-free days, changing precipitation regimes, and cold-tolerant crop varieties for northern growers.