GIS Data Catalog

Landslide Hazards along River Corridors - Historical Landslides

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Summary

Suitable for general reference and analyses.

Identifies only historical landslides (landslides that have happened) recorded within the river corridors in King County.

Description

This layer refers to recorded historical landslides (landslides that have happened) within the river corridors.

These locations are based only on reviewing landslide information shared from local cities, and state and local agencies.

Layer information

Layer Name	lsr_historicallandslides_point
Subject Category	Environment
Title	Landslide Hazards along River Corridors - Historical Landslides
Feature Count	315
Feature Type	Point
Next Update	None planned
Spatial reference	EPSG:2926
Control ID	2562
Place Keywords	Pacific NW, King County, WA, Washington State
Theme Keywords	Enviro, Pacific NW, King County WA, Washington State, Landslide, Slide, Mass Movement, Landslide Hazard Mapping, Debris Slides, Shallow Landslides, Shallow Landsliding, Debris Sliding
Supplemental Information	It is common knowledge to landslide practitioners that where a landslide has occurred in the past, it may happen again. An inventory of historical landslides was completed for the study limits. Historical landslides are landslides that are known to have occurred either from observation, studies, or monitoring. Geotechnical reports, landslides studies and maps, permit applications, and field reports are commonly stored by city, county, and federal agencies. Five divisions or sections within King County were contacted to inquire about landslide-related data. Additionally, some local cities, Washington State agencies, local public utilities, and state agencies were queried. Documents came in the form of formal and field reports (hard copy and electronic), electronic lists, photographs (hard copy and microfliche), and ArcGIS® electronic map files. The most common form of data was received as geotechnical reports.

Table Preview

Attribute information

OBJECTID From Esri	Description Internal feature number. Domain Sequential unique whole numbers that are automatically generated.
LS_ID No Source Noted	Description Identification number assigned by KC. Acronym stands for source. Domain Not Found
Report From King County	Description Is there a report Domain N, Y
Latitude From King County	Description Not Found Domain 47.17329 to 47.74995 by
Longitude From King County	Description Not Found Domain -122.283946 to -121.31259 by
Author From King County	Description Author of document Domain Not Found
Site_map From King County	Description Is there a site map in the report Domain No, Yes
Test_pits From King County	Description Test pits noted. Any references to this activity in report Domain No, Yes
Borings From King County	Description Borings noted. Any references to this activity in report Domain No, Yes
Faults From King County	Description Faults noted. Answers if was noted in document Domain Yes
TRIGGER_ From King County	Description Answers if was observed and noted in document Domain human activity, other, precipitation
StAddress From King County	Description Street address, if known, for landslide Domain Not Found
RptTitle From King County	Description Title of document Domain Not Found
RptDate From King County	Description Document date Domain Not Found
SubLogs From King County	Description Are there logs in the report Domain No, Yes
Photos From King County	Description Are there photographs in the report Domain No, Yes
Exp_Year From King County	Description If exploration, what year Domain 1967, 1980, 1985, 1987, 1989, 1992, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007, 2009, 2011, 2014
GW_wells From King County	Description Groundwater wells. Any references to this activity in report Domain No, Yes
Inclinom From King County	Description Inclinometers. Any references to this activity in report Domain No, Yes
MovMtg From King County	Description Movement monitoring. Any references to this activity in report Domain No, Yes
St_Testing From King County	Description Strenght testing. Any references to this activity in report Domain No, Yes
TextAnlys From King County	Description Textural analysis. Any references to this activity in report Domain No, Yes
TypeMove From King County	Description Type of movement. Answers if was noted in document Domain No, Yes
Def_Scarp From King County	Description Defined scarp. Answers if was noted in document Domain No, Yes
Def_Toe From King County	Description Defined toe. Answers if was noted in document Domain No, Yes
HeadscrpHt From King County	Description Headscarp height in feet. Answers if was noted in document Domain 15, 15-20, 3-6, 4-5, 6-9
SlopeSet From King County	Description Slope setting. Answers if was noted in document Domain human modified, natural
VisFeat From King County	Description Visible features. Answers if was noted in document Domain Yes
StylFail No Source Noted	Description Style of failure. Answers if was noted in document Domain Not Found
EvidMove No Source Noted	Description Evidence of ongoing movement. Answers if was noted in document Domain Not Found
AgeLastMo No Source Noted	Description Age of latest historic movement. Answers if was noted in document Domain Not Found
EvidHistM No Source Noted	Description Evidence of historic movement. Answers if was noted in document Domain Not Found
RdClosure From King County	Description Road closure. Answers if was noted in document Domain No, Yes
UtilDamage From King County	Description Utility damage. Answers if was noted in document Domain No, Yes
RdDamage From King County	Description Road damage. Answers if was noted in document Domain No, Yes
StrucDamg From King County	Description Structure damage. Answers if was noted in document Domain No, Yes
HumConF From King County	Description Human factors. Answers if was noted in document Domain grading, groundwater modification, May be a quarry, other, Other, Part may be excavated, pit?, surface water modification, vegetation modification
GWFound From King County	Description Groundwater found in exploration. Answers if was noted in document Domain No, Yes
Streams From King County	Description Stream course crosses site. Answers if was noted in document Domain
NtlStrcrss From King County	Description Natural stream course crosses site. Answers if was noted in document Domain No, Yes
NtlStadj From King County	Description Natural stream course adjoins site. Answers if was noted in document Domain No, Yes
ConSW From King County	Description Constructed stormwater discharge to site. Answers if was noted in document Domain No, Yes
Impound From King County	Description Impound. Answers if was noted in document Domain No, Yes
Springs From King County	Description Springs present. Answers if was noted in document Domain No, Yes
StrucObs From King County	Description Structures observed. Answers if was noted in document Domain No, Yes
RoadsObs From King County	Description Roads observed. Answers if was noted in document Domain private, public, Road, Yes
Shape From Esri	Description Feature geometry. Domain Coordinates defining the features.
ReportURL No Source Noted	Description Not Found Domain Not Found

Contact information

Maintained by	DNRP - Water and Land Resources
Primary	Harkeerat Kang Harkeerat.Kang@kingcounty.gov

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