DGGS RI 2024-2

Debris flow hazard evaluations for multi-hazard risk mapping in Sitka, Alaska

• Authors:

  Hubbard, T.D., Daanen, R.P., and Stevens, D.S.P.

• Publication Date:

  Jun 2025

• Publisher:

  Alaska Division of Geological & Geophysical Surveys 

• Total Price:

  $79.00

• Ordering Info:

  Download below for free or see our publication sales page to order a hard copy.

• Quadrangle(s):

  Port Alexander; Sitka

• Related project(s):

  Sitka debris flow hazards

• Citation ID:

  30187

Bibliographic Reference

Hubbard, T.D., Daanen, R.P., and Stevens, D.S.P., 2025, Debris flow hazard evaluations for multi-hazard risk mapping in Sitka, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2024-2, 14 p., 6 sheets, scale 1:20,000. https://doi.org/10.14509/30187

Publication Products

• Report Information

  • ri2024_002.pdf (3.5 M)

• Maps & Other Oversized Sheets

  • Sheet 1, Debris flow and rockfall inventory map of Sitka, Alaska, scale 1:20,000 (12.0 M)
  • Sheet 2, Factor of safety map of Sitka, Alaska, scale 1:20,000 (14.0 M)
  • Sheet 3, Modeled debris flow runout map of Sitka, Alaska: Scenario 1, scale 1:20,000 (12.0 M)
  • Sheet 4, Modeled debris flow runout map of Sitka, Alaska: Scenario 2, scale 1:20,000 (12.0 M)
  • Sheet 5, Integrated potential debris flow hazard map of Sitka, Alaska: Scenario 1, scale 1:20,000 (14.0 M)
  • Sheet 6, Integrated potential debris flow hazard map of Sitka, Alaska: Scenario 2, scale 1:20,000 (14.0 M)

• Geospatial & Analytical Data

  Debris flow hazard evals, Sitka, Alaska	Data File Format	File Size	Info
  Download ri2024_002_landslide-inventory-sitka	Shapefile	214.4 K	Metadata - Read me
  Download ri2024_002_scenario1-debris-flow-runout-sitka	Georeferenced raster files	417.9 K	Metadata - Read me
  Download ri2024_002_scenario2-debris-flow-runout-sitka	Georeferenced raster files	448.3 K	Metadata - Read me
  Download ri2024_002_slope-susceptibility-sitka	Shapefile	7.7 M	Metadata - Read me
  Download ri2024_002_watershed-size-sitka	Shapefile	418.6 K	Metadata - Read me

Keywords

Bear Cove; Beaver Lake; Blue Lake; Cascade Creek; Castle Hill; Coastal; Coastal and River; Colluvium; Crescent Bay; Debris Avalanche; Debris Flow; Debris Flow Deposits; Earthquake Related Slope Failure; Engineering; Engineering Geology; Environment; Environmental; Geologic; Geologic Hazards; Geological Process; Geology; Geomorphology; geoscientificInformation; Geotechnical; Granite Creek; Green Lake; Halibut Point; Halibut Point Road; Harbor Mountain Road; Harbor Point; Hazards; Heart Lake; Herring Cove; Holocene; Hydrology and Surficial Geology; Indian River; Indian River Road; Indian River Valley; Jamestown Bay; Landslide; LiDAR; Maksoutoff Road; Medvejie Lake; Modeling; Raster Image; Sawmill Cove; Sawmill Creek; Sawmill Creek Road; Sealing Cove; Silver Bay; Sitka; Sitka Ferry Terminal Road; Sitka Harbor; Slope; Slope Instability; Southeast Alaska; Starrigavan Bay; Surface; Surface Water; Surficial; Surficial Geology; Swan Lake; Thimbleberry Bay; Thimbleberry Lake; Thomsen Harbor; Vodopad River; Whiting Harbor

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