King County GIS Center
King Street Center
201 S. Jackson St.
Suite 706
Seattle, WA 98104
giscenter@kingcounty.gov

+ 47.59909 N
- 122.33136 W

+ 47°  35' 56.72"
- 122° 19' 52.90"

 

Landslide Hazards along River Corridors - Historical Landslides

Description | Contacts | Attribute Information | Constraints

Data layer thumbnail image

Description

Layer name: LSR_HISTORICALLANDSLIDES
Subject category: enviro
Title: Landslide Hazards along River Corridors - Historical Landslides
Feature Count: 315
Feature Type: Point
Abstract: 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.
Purpose: Suitable for general reference and analyses. Identifies only historical landslides (landslides that have happened) recorded within the river corridors in King County.
Status: Complete
Updated: None planned
Time period of content: (single date,as YYYYMMDD):: 20150401
Time period of content: (date range, as YYYYMMDD):: -
Spatial reference: WA State Plane North
FGDC Documentation: Classic or FAQ
Open Data Availability: Yes
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,
Lineage: Not available
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.

Contacts

Maintained by:
King County King County Dept of Natural Resources and Parks, Water and Lands Resource Division
Primary: Ken Rauscher, GIS Analyst, 206-477-4414
(How to e-mail a County contact)
Secondary: KCGIS Center; giscenter@kingcounty.gov. This mailbox is monitored during business hours.

Attribute Information

ItemDescriptionDomain
_LS_ID_Identification number assigned by KC. Acronym stands for source.
_Report_Is there a report
N
Y
_Latitude_
Range Min:47.17329
Range Max:47.74995
_Longitude_
Range Min:-122.283946
Range Max:-121.31259
_Author_Author of document
_Site_map_Is there a site map in the report
No
Yes
_Test_pits_Test pits noted. Any references to this activity in report
No
Yes
_Borings_Borings noted. Any references to this activity in report
No
Yes
_Faults_Faults noted. Answers if was noted in document
Yes
_TRIGGER__Answers if was observed and noted in document
human activity
other
precipitation
_StAddress_Street address, if known, for landslide
_RptTitle_Title of document
_RptDate_Document date
_SubLogs_Are there logs in the report
No
Yes
_Photos_Are there photographs in the report
No
Yes
_Exp_Year_If exploration, what year
1967
1980
1985
1987
1989
1992
1995
1996
1997
1998
1999
2000
2001
2002
2004
2005
2006
2007
2009
2011
2014
_GW_wells_Groundwater wells. Any references to this activity in report
No
Yes
_Inclinom_Inclinometers. Any references to this activity in report
No
Yes
_MovMtg_Movement monitoring. Any references to this activity in report
No
Yes
_St_Testing_Strenght testing. Any references to this activity in report
No
Yes
_TextAnlys_Textural analysis. Any references to this activity in report
No
Yes
_TypeMove_Type of movement. Answers if was noted in document
No
Yes
_Def_Scarp_Defined scarp. Answers if was noted in document
No
Yes
_Def_Toe_Defined toe. Answers if was noted in document
No
Yes
_HeadscrpHt_Headscarp height in feet. Answers if was noted in document
15
15-20
3-6
4-5
6-9
_SlopeSet_Slope setting. Answers if was noted in document
human modified
natural
_VisFeat_Visible features. Answers if was noted in document
Yes
_StylFail_Style of failure. Answers if was noted in document
_EvidMove_Evidence of ongoing movement. Answers if was noted in document
_AgeLastMo_Age of latest historic movement. Answers if was noted in document
_EvidHistM_Evidence of historic movement. Answers if was noted in document
_RdClosure_Road closure. Answers if was noted in document
No
Yes
_UtilDamage_Utility damage. Answers if was noted in document
No
Yes
_RdDamage_Road damage. Answers if was noted in document
No
Yes
_StrucDamg_Structure damage. Answers if was noted in document
No
Yes
_HumConF_Human factors. Answers if was noted in document
grading
groundwater modification
May be a quarry
other
Other
Part may be excavated
pit?
surface water modification
vegetation modification
_GWFound_Groundwater found in exploration. Answers if was noted in document
No
Yes
_Streams_Stream course crosses site. Answers if was noted in document
_NtlStrcrss_Natural stream course crosses site. Answers if was noted in document
No
Yes
_NtlStadj_Natural stream course adjoins site. Answers if was noted in document
No
Yes
_ConSW_Constructed stormwater discharge to site. Answers if was noted in document
No
Yes
_Impound_Impound. Answers if was noted in document
No
Yes
_Springs_Springs present. Answers if was noted in document
No
Yes
_StrucObs_Structures observed. Answers if was noted in document
No
Yes
_RoadsObs_Roads observed. Answers if was noted in document
private
public
Road
Yes
_ReportURL_


Constraints

Access: Access Constraint: Data is not available on GIS Data Portal, it may be available via a custom data request

Use: Use Constraint: King County data are made available with the understanding that they shall be used exclusively by the obtainer or his/her authorized agents. Digital products may not be reproduced or redistributed in any form or by any means without the express written authorization of King County.