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Table 1.  Database of reported landslides that occurred during the 2001 - 2002 wet season in Seattle and neighboring areas.

Landslide Reference Area Description1 Damage/hazard1 Date/time of occurrence Field Checked
Number       information (reference) (Y/N)
           
1 1600 block of 10th Ave E., Reactivation of deep-seated landslide. Residential area--extent of damage/ November 2, 2001 (City of Seattle, unpub. Y
  Seattle Large volume of groundwater seepage hazard undetermined. data, 2002)  
    from site was noted.  Possible human      
    influence cited (broken water pipes)      
    (City of Seattle, unpub. data, 2002)      
           
2 Schuster Parkway, Tacoma Shallow flows originated from steep Blocked southbound lane. Maintenance "Wednesday's [11/14/01] drenching Y
    exposure near west side of Parkway. required. rain ….closed some roads….Several  
        small mudslides blocked the southbound  
        lane of Schuster Parkway, according  
        to Tacoma Public Works officials.  
        Crews worked from 7:30 a.m. to  
        1:30 p.m. before they reopened the  
        lane."  (Tribnet.com, 11/15/01)  
           
3 3000 block of W. Galer, Shallow slide. Possible human influence Damaged back of small beach home and  The slide occurred at approximately Y
  Seattle (cut/fill location).  Slide area is approximately 30 ft of roadway behind 8:00 a.m. on 11/14/01. The occupant  
    approximately 40-ft long, 30-ft wide, home.  Additional movement could of the home was nearly hit by the slide  
    and 10 ft high.  result in more damage to structure. as she was leaving the house that  
        morning (Dennis Callahan, local  
        resident, oral commun. 2002).  
           
4 1800 block of West Lake Shallow debris flow from slope "The mudslide brought silt and water "Bellevue road crews spent most of Y
  Sammamish Parkway, along east side of highway.  Granular down the hill to Mallard Lane, below Wednesday [11/14/01] and part of  
  Bellevue. slide material flowed down a 50 - 60 ft West Lake Sammamish Parkway, and yesterday [11/15/01] trucking in tons  
    high slope to residential area below. affected at least three property owners of quarry rock to stabilize the 1800  
    Scar approximately 30-ft wide, 40-ft below…..one home bore the brunt of the  block of the parkway, which was  
    long, and as much as 10-ft deep. Human slide, with up to a foot of mud oozing weakened dangerously by a mudslide….  
    influence cited (pluggged culvert through the first floor of the house." On Wednesday, a backup in the culvert  
    apparently a major factor). (Eastsidejournal.com., 11/16/01; see caused flooding that provoked a  
      SeattleP-I.com photo in 11/15/01 mudslide…." (Eastsidejournal.com.,  
      online issue). 11/16/01).  
      "The mud was 16 inches thick at some "The slide in the 1800 block  
      points on the road" (Eastsidejournal.com [of West Lake Sammamish Parkway]  
      11/15/01). came just as the Eastside's commute  
      The slope failure partly undermined was winding down." (SeattleP-I.com,  
      the east side of West Lake Sammamish 11/15/01).  
      Parkway (see photo, Seattletimes.com.,    
      11/15/01).    
           
5 North Ferdinand St (near Shallow debris flow on steep slope Temporarily closed North Ferdinand "Wednesday's [11/14/01] drenching Y
  North 46th St), Tacoma underlain by colluvium. Slide track Street. rain ….closed some roads….Mudslide  
    is approx 10-ft wide and 30-ft long.   closed North Ferdinand Street about  
        11:30 a.m., but crews reopened the  
        road to North 46th Street three hours  
        later." (Tribnet.com., 11/15/01)  
* Descriptive information missing or insufficient.
 1 1 ft = 0.3048 m
Table 1 cont'd
Landslide Reference Area Description1 Damage/hazard1 Date/time of occurrence Field Checked
Number       information (reference) (Y/N)
           
6 Opposite 12720 Riviera Pl. NE, Shallow flow, 5 - 10 yds of material, Debris covered or partly covered A slide (5-10 yds of material) Y
  Seattle 1-2 ft thick, track is 3-12 ft wide  Burk-Gilman trail. occurred opposite 12720 Riveria,  
    Fresh scar 6 - 10 ft below crest of   Report received at 4:45 p.m. on  
    bluff.   11/14/01.  Slide occurred at  
        approximately 3:00 p.m. on 11/14/01.  
        (Rex Allen, City of Seattle, oral  
        commun. 2001).  
           
7 Soos Creek Trail at SE 240th, * Blocked section of Soos Creek "The first major rainstorm of the N
  Kent   Trail. season brought mudslides to Western  
        Washington yesterday [11/14/01]…..  
        Soos Creek Trail at Southeast 240th  
        Street in Kent was closed when a  
        mudslide blocked the path." (Seattle  
        times.com, 11/15/01).  
        "A mudslide blocked a section of Soos  
        Creek Trail at Southeast 240th Street  
        in Kent. Clean-up efforts had not  
        started yesterday afternoon."  (South  
        countyjournal.com, 11/15/01).  
           
8 West Valley Highway at 15th * One lane of West Valley Highway at "Auburn officials reported that one N
  Street NW, Auburn   15th Street blocked lane of West Valley Highway at 15th  
        Street was blocked by a small slide  
        for about an hour early yesterday  
        afternoon before an Auburn maintain-  
        ance crew was able to clear it."  
        (Southcountyjournal.com, 11/15/01)  
           
9 Near Highway 522 at Paradise Shallow debris flows from 30- to 40-ft Debris flow(s) shut down westbound "Several roads in the suburbs east of Y
  Lake Rd., south Snohomish high mound of fill. Human influence lanes. Seattle were closed Wednesday  
  County. noted (mound appears to be a remnant of   [11/14/01]….Highway 522 in south  
    highway construction).  Slope areas   Snohomish County was reopened to  
    as much as 60 ft across covered with   traffic Wednesday night, several  
    plastic to prevent further sliding/   hours after a mudslide shut down  
    erosion.   westbound lanes, said state Department  
        of Transportation spokeswoman  
        Melanie Moores." (HeraldNet.com.,  
        11/16/01).  
           
10 Opposite 12582 Riviera Pl. NE, Shallow slide scar exposes sand Covered part of Burke-Gilman trail. A slide (approximately 40 yds of Y
  Seattle above ledge of fine-grained material   material) occurred opposite 12582  
    (siltstone?).  Scar is 15-20 ft high,   Riviera Dr. NE between midnight and  
    25-30 ft wide, and 1-3 ft thick.   7:00 a.m. on 11/15/01 (Rex Allen,  
        City of Seattle, oral commun., 2001).  
           
Table 1 cont'd
Landslide Reference Area Description1 Damage/hazard1 Date/time of occurrence Field Checked
Number       information (reference) (Y/N)
           
11 Opposite 13038 Riviera Pl. NE, Shallow slide 10-15 ft high.  Most Covered part of Burke-Gilman trail. Another slide opposite 13038 Y
  Seattle active part on south end is 10-30 ft Required maintenance. Riviera Dr. NE occurred between  
    wide.  Trees had to be removed due   midnight and 7:00 a.m. on 11/15/01.  
           
           
           
           
           
    the slide. Slide debris is fine-grained   (Rex Allen, City of Seattle, oral  
    brown colluvium derived from horizon-   commun., 2001).  
    tally bedded sediments.  Total slide      
    area is approximately 25-30 ft wide.      
    Many drain lines cross slide area from      
    bench above.      
           
12 Opposite 11728 Riviera Pl. NE, Small debris flow track 3-6 ft wide May have covered part of Burke-Gilman Slide opposite 11728 Riviera Dr. NE Y
  Seattle and ~20-30 ft high.  Horizontally- trail. Required maintenance. occurred at or just before noon on  
    bedded, brown natural sediments   11/15/01 (Rex Allen, City of Seattle,  
    exposed in the scar.  Deposit is several   oral commun., 2001).  
    inches thick.  Debris may have reached      
    Burke-Gilman trail but has been cleared.      
    Deposit consists of mixture of sand      
    and fines with fragments of siltstone      
    and claystone.      
           
13 Opposite 12328 Riviera Pl. NE, Minor slide where loose debris No damage to structures. Slide opposite 12328 Riviera Dr. NE Y
  Seattle may have slid off ledge.   occurred between noon and 5:00 p.m. on  
        11/15/01 (Rex Allen, City of Seattle,  
        oral commun., 2001).  
           
14 Opposite 13200 Riviera Pl. NE, * * "Slide opposite 13200 Riviera Dr. NE N
  Seattle     occurred between noon and 5:00 p.m. on  
        11/15/01." (Rex Allen, City of Seattle,  
        oral commun., 2001).  
           
15 Discovery Park, northwest * Slide/debris flow took out part of Slide in Discovery Park occurred N
  Seattle   trail. on 11/15/01.  The slide took out part  
        of a trail (Mark Orth, City of Seattle.  
        oral commun., 2001).  
           
16 Opposite 13200 Riviera Pl. NE, Enlargement of slide (that occurred on Continued movement in the area may New cracks have developed on hillside Y
  Seattle 11/15/01) indicated by development threaten fire hydrant and water line. above slide that occurred on 11/15/01,  
    of ground cracks 25-30 ft above slide   opposite 13200 Riviera Dr. NE.  The  
    on south side.   cracks are located 25-30 ft above  
        slide. The new movement was reported  
        at noon on 11/19/01 (Rex Allen,  
         City of Seattle, oral commun., 2001).  
           
17 12000 block of 42nd Ave. NE, * * City received notificaton/request N
  Seattle     regarding occurrence of landslide   
        on 11/19/01 (unpub. City of Seattle  
        database, 2/6/02)  
           
18 3600 block of NW 65th Court, Shallow slide.  Human influence noted Estimated $10,000 damage to retaining "It [the retaining wall/fill failure] Y
  Seattle (approximately 15 ft of a 10-ft high wall and yard.  Maintenance required occurred about 6:00 a.m. on 11/21/01.  
    retaining wall, and fill behind wall, to clear and reopen NW 65th Court. I was outside at the time and heard the  
    failed onto street).   noise". (Jana Davis, local resident, oral  
        commun., 2002)  
Table 1 cont'd
Landslide Reference Area Description1 Damage/hazard1 Date/time of occurrence Field Checked
Number       information (reference) (Y/N)
           
19 1900 block of 4th Ave. NW, Shallow slide/garden wall failure. Estimated $5,000 damage. City received notificaton/request Y
  Seattle Possible human influence.   regarding garden wall failure on    
        11/21/01 (unpub. City of Seattle  
        database, 2/6/02).  
           
20 12300 block of 25th Ave. NE , Shallow sloughing and water erosion Minor damage to 25th Ave. NE. City received notificaton/request Y
  Seattle  near culvert damaged part   regarding road damage due to slide on    
    of roadway. Possible human influence.   11/21/01 (unpub. City of Seattle  
        database, 2/6/02).  
           
21 Fay Road NE near SR 203, * Major highway maintenance and slope "SR 203 has been reopened.  The state N
  approximately 4 mi south of   repair required. highway was closed for 19 hours Friday  
  of Duvall.     [11/23/01] when it was hit by several  
        mudslides originating from blocked  
        culverts along Fay Road northeast, east  
        of SR 203.  Crews have cleared debris  
        from the roadway and removed unstable  
        material from the slope located east of  
        the roadway". (Eastsidejournal.com.,  
        11/25/01)  
        "The first slide covered one lane, but  
        later slides blocked both lanes and sent  
        entire trees and their root systems onto  
        the road.  The roadway was reopened at  
        8:40 p.m." (Seattletimes.com,  
        11/24/2001).  
           
22 Opposite 12344 Riviera Pl. NE, Shallow debris flow on steep slope Covered Burke-Gilman trail at slide A slide (approx. 40 yds of material)  Y
  Seattle beneath balcony at rear of residence. location. Cleanup required. opposite 12344 Riviera Pl. NE occurred  
    Slide scar (covered with plastic) is   between midnight and 9:00 a.m. on  
     20 ft wide,15 - 20 ft high, 2 - 5 ft   11/23/01 (Rex Allen, City of Seattle,  
    deep.  Sand exposed in scar.   oral commun., 2001)  
           
           
23 Opposite 12344 Riviera Pl. NE, Enlargement (by as much as 15 ft Undetermined Slide opposite 12344 Riviera Dr. NE, Y
  Seattle to the north) of slide that occurred on   widened by as much as 15 ft over the  
    11/23/01.   weekend [11/24-25/01] (Rex Allen,  
        City of Seattle, oral commun., 2001)  
           
24 Opposite 12720 Riviera Pl. NE, Additional sliding/enlargment along None to structures Slide opposite 12720 Riviera Dr. NE Y
  Seattle crest of slide that occurred   that occurred on 11/14/01 had some  
    on 11/14/01.   additional sliding along the crest of  
        the slide, prior to a 10:00 a.m. site  
        visit on 11/26/01, that enlarged  
        the slide area (Rex Allen, City of  
        Seattle, oral commun., 2001).  
           
25 4000 block of NE 125th Street, Shallow slide/retaining wall failure Damaged retaining wall and exposed City received notificaton/request N
  Seattle Possible human influence. pipeline. regarding garden wall failure/landslide on     
        11/26/01 (unpub. City of Seattle  
        database, 2/6/02).  
           
Table 1 cont'd
Landslide Reference Area Description1 Damage/hazard1 Date/time of occurrence Field Checked
Number       information (reference) (Y/N)
           
26 Highway 305 at Agate Bridge, * Debris closed Highway 305 "Following the Wednesday [11/28/01] N
  Bainbridge Island     storm that left several inches of wet  
        snow, a mudslide early Thursday  
        [11/29/01] closed Highway 305 and  
        the Agate Pass Bridge, snarling rush  
        hour traffic from about 6:30 a.m. to  
        11:00 a.m." (Bainbridge Island Review  
        online edition, 12/01/01).  
           
27 Bluff along railroad * Blocked both sides of railroad tracks "A mudslide closed railroad tracks north N
  tracks (Mile Post 29.2),     of Mukilteo early Thursday [11/29/01]  
  Mukilteo     morning forcing more than 100 Amtrack  
        train passengers to be bused from  
        Everett to Seattle…The mudslide which  
        was 10 feet deep and 40 feet long, gave  
        way at 3:30 a.m. Thursday.  It blocked  
        both sides of the tracks." (The Herald,  
        Everett Wash. , 11/30/01, p. B4).  
           
28 3000 block of S. Dawson Failure on steep slope involving rockery. Damage to rockery and front yard. City received notificaton/request Y
  Street, Seattle Plastic sheeting covers area   regarding garden wall failure/landslide    
    approximately 25-ft wide and 30-ft   on 12/3/01 (unpub. City of Seattle  
    high. Possible human influence.   database, 2/6/02).  
           
29 10200 block of Waters Ave. S, Shallow slide in yard onto sidewalk. Removal of debris from sidewalk City received notificaton/request N
  Seattle   required. regarding landslide on 12/13/01  
        (unpub. City of Seattle database,  
         2/6/02).  
           
30 2700 block of 36th Ave. SW Shallow colluvial slide. Possible human Movement of ground in yard onto walk  Date of notification was 12/13/01 Y
    influence (keystone wall failure). and keystone wall failure. (City of Seattle unpub. database, 2002)  
           
31 17400 block of NE 27th Street, * House foundation anchoring and water "The city yesterday finished anchoring N
  Redmond   line repair required. the foundation of a house in the path of  
        a mudslide that has been creeping down  
        a hillside since Thursday [12/14/01].  
        Heavy rains are blamed for sweeping  
        away  a large part of a backyard in the  
        17400 block of Northeast 27th Street.  
        The mudslide also caused a six-inch  
        water line to break, leaving about 12  
        residents without water service for a  
        day or two." (Eastsidejournal.com,  
        12/19/2001).  
           
32 9000 block of Renton Ave. S., Shallow slide/debris flow on slope No structures affected City received notificaton/request Y
  Seattle adjacent to Renton Ave. S.  Slide/   regarding landslide on 12/16/01 at  
    flow path is approximately 20 ft high   about 4:00 p.m. (unpub. City of Seattle  
    and 5- 10 ft wide. Slope is in a natural   database, 2/6/02; J. Ege; City of  
    granular deposit (till?) and colluvium.   Seattle, e-mail commun., 2001).  
           
Table 1 cont'd
Landslide Reference Area Description1 Damage/hazard1 Date/time of occurrence Field Checked
Number       information (reference) (Y/N)
           
33 9800 block of Rainier Ave S., Shallow debris flow adjacent to Street cleanup required. City received notificaton/request Y
  Seattle Rainier Ave. S.  Slide is approximately   regarding landslide on 12/16/01 at  
    10 -12 ft wide and 30-ft long and is in   about 4:00 p.m. (unpub. City of Seattle  
    a natural, granular deposit (till?) and   database, 2/6/02; J. Ege; City of  
    colluvium.   Seattle, e-mail commun., 2001).  
           
34 Lake Washington Blvd. S. Shallow slide/debris flow on bluff Street closure and maintenance City received notificaton/request Y
  between 46th Ave. S. and adjacent to Lake Washington Blvd. S. required. regarding landslide on 12/16/01 at  
  48th Ave S., Seattle Slide/flow path is approximately 30-ft   about 6:00 p.m. (unpub. City of Seattle  
    high and 12- ft wide. Slide is in a natural   database, 2/6/02; J. Ege; City of  
    granular, deposit (till?).   Seattle, e-mail commun., 2001).  
           
35 2100 block of 18th Ave. S., Small slide/debris flow on steep Required minor street cleanup. City received notificaton/request Y
  Seattle 50-60 ft high slope adjacent to 18th   regarding landslide on 12/16/01 at  
    Ave. S.  Slide/flow path is approximat-   about 4:00 p.m. (unpub. City of Seattle  
    ely 30-ft  high and 10 -ft wide. Slide is   database, 2/6/02; J. Ege; City of  
    in a natural granular deposit    Seattle, e-mail commun., 2001).  
    (till(?)/colluvium).      
           
36 2500 block of Gilman Dr. W. Slide on 40-ft high, steep slope adjacent   Crack and subsidence in pavement City received notificaton/request Y
  (below upper road of Gilman to Gilman Dr. W.  Slide debris composed (crest area) on street above slide. regarding landslide on 12/16/01 at  
  Dr. W. near 14th Ave. W.), mostly of sand, gravel, and silt.  Slide indicate possible future enlargement about 4:00 p.m. (unpub. City of Seattle  
  Seattle area is approx. 25-ft high and 20-ft that would damage upper Gilman Dr. W. database, 2/6/02)  
    wide. and possibly deposit hazardous slide    
      debris on lower Gilman Dr. W.  Street    
      repair/maintenance required.    
           
37 10300 block of Bedford Ct. NW, "The deep failure has a semi-circular Two structures compromised "On Sunday [12/16/01] there was N
  Seattle scarp face, approximately 250 ft across (Brian Smith, City of Seattle, a massive slump block failure on  
    and 100 ft wide. The block dropped from e-mail commun., 2001) Bedford Court NW." (Brian Smith,  
    3 to 7 ft……Initially, it appears to be    City of Seattle, e-mail commun.,  
    about 40 ft deep." (Brian Smith, City   12/21/01).  
    of Seattle, e-mail commun., 2001)      
           
38 2400 block of SW 172nd St., Debris flow originating from steep "…..homes were damaged in the Three "The mudslide occurred at 7:30 p.m. Y
  Burien. hillside behind homes on SW 172nd St. Tree Point area of South King County…. on 16 December, 2001." (anonymous  
    Slide scar is approximately 100-150 ft The mud almost completely buried three local resident, oral commun., 2002).  
    long and as much as 50-60 ft wide. cars…" (Seattletimes.com, 12/18/01). "Last night [night of 12/16/01], a  
    Scarp along left flank is as much as  Slide debris (loose sand, gravel, and mudslide near Southwest 172nd Street  
    10-15 ft high. Slide scar exposes mostly downed trees) appears susceptible to and 24th Avenue Southwest in Burien  
    sand and sand and gravel deposits. additional movement future heavy rains caused a large water pipe to break,  
    Remnant of approximately 6-inch   flooding several homes, King County  
    diameter waterline, that previously   firefighters reported." (Seattlep-I-  
    traversed the hillside, protruding from   nwsourse.com, 12/17/01).  
    head scarp. Possible human influence.      
           
39 1200 block of NW Elford Dr., Deep-seated slide/flow originating Remedial work to drain and stabilize "Slide [in 1200 block of NW Elford] dated Y
  Seattle on bluff above railroad tracks. Slide slide area has been performed. to Sunday, December 16…slide is under  
    area is approx. 10 -130 ft long and as Enlargement of slide area could engineer and contractors guidance"  
    much as 100 ft wide. Sand, gravel, and undermine foundation of nearby home. (unpub. City of Seattle database, 2/6/02)  
     plastic, clayey silt are exposed in the Additional downslope movement could    
    slide debris. impact railroad tracks located below.    
      slide area.    
           
Table 1 cont'd
Landslide Reference Area Description1 Damage/hazard1 Date/time of occurrence Field Checked
Number       information (reference) (Y/N)
           
40 1100 blcck of W. Garfield Deep-seated slide. Slope height * On or about 12/16/01 Y
    approximately 220 ft (get more info in   (unpub. City of Seattle database, 2002)  
    database)      
           
41 12000 block of 42nd Ave. NE Shallow colluvial slide. Slope height is * On or about 12/18/01 Y
    approximately 20 ft. Scar is 10 - 12 ft   (unpub. City of Seattle database, 2002)  
    wide and less than 2 ft deep.      
           
42 5300 block of S Hudson St. Shallow colluvial slide. Slope height is Slide debris on roadway. On or about 12/18/01 Y
    approximately 35 feet.   (unpub. City of Seattle database, 2002)  
           
43 1400 block of Van Burien Shallow colluvial slide. Slope height is No structural damage reported. On or about 12/19/01  
  Ave. W. aproximately 25 feet.   (unpub. City of Seattle database, 2002) Y
           
           
44 Highway 101 north of * Debris in roadway caused road closure.  "Motorists pondered their options on N
  Lilliwaup     Highway 101 north of Lilliwaup on  
        Monday [1/7/02] after mudslide left  
        fallen trees in the roadway.  The  
        highway was closed about 9:00 a.m.  
        (photo caption, Thesunlink.com, 1/8/02).  
           
45 1600 block of Harbor Ave. SW, Shallow slide/debris flow in colluvium. No damage to structures. City received notificaton/request Y
  Seattle Slope height approximately 50 feet.   regarding landslide on 1/8/02  
        (unpub. City of Seattle database,  
         2/6/02).  
           
46 1500 block of Alki Ave. SW, Shallow slide/debris flow in colluvium. No damage to structures. City received notificaton/request Y
  Seattle Slope height approximately 25 feet.   regarding landslide on 1/8/02  
        (unpub. City of Seattle database,  
         2/6/02).  
           
47 Highway 166 near Port Shallow slides along Highway 166 Caused road closures. "Numerous slides struck along Y
  Orchard between Gorst and Port Orchard.   Highway 166 between Gorst and  
        Port Orchard, but all were superficial  
        and road closures brief." (Thesunlink.  
        com, 1/8/02).  
           
48 Big Valley Road, Poulsbo * "The road was closed for several "On Big Valley Road north of Poulsbo N
      hours as Puget Sound Energy a 50-foot section of the 35-foot high  
      stabilized the power lines and the bank slide down the road carrrying power  
      county road department assesed the poles with it." (Thesunlink.com, 1/8/02).  
      problem" (Thesunlink.com., 1/8/02).    
           
49 Illahee Road, Brownsville Small slides along Illahee Road. Caused road closure. "Illahee Road across from Brownsville N
        closed as a precaution after small slides  
        and movement of trees atop embankments  
        there created worries of greater sliding."  
        (Thesunlink.com, 1/8/02)  
           
50 Front Street, Bremerton * Damaged vehicles and other personal "A mudslide clobbered the garage…… N
      property in garage of home. at Earhart and Front Street west of  
        Bremerton." (Thesunlink.com, 1/8/02)  
           
Table 1 cont'd
Landslide Reference Area Description1 Damage/hazard1 Date/time of occurrence Field Checked
Number       information (reference) (Y/N)
           
51 Patten Ave, Bremerton * House above slide threatened. "A mudslide along Patten Avenue above N
        the Gateway Boulevard theatened a  
        vacant house above the slide…..."  
        (Thesunlink.com., 1/8/02).  
           
52 Price Road, Bremerton * Caused road closure. "Also in Bremerton, Price Road from N
        Hazel Avenue to Sixth Street, will be  
        closed indefinetly because of slope  
        failures." (Thesunlink.com., 1/9/02).  
           
53 Mount Index Estates area, * Undetermined "In Snohomish County, emergency- N
  Snohomish County     management officials remained concern-  
        ed about a 150-foot wide mudslide along  
        the Skykomish River's South Fork in the  
        Mount Index Estates area." (Seattletimes.  
        com., 1/9/02).  
           
54 1000 block of West Lake Slide on steep slope on west side of West West Lake Sammamish Parkway "The shift [landslide] occurred Thursday Y
  Sammamish Parkway, Lake Sammamish Parkway.  Repaired closed for an extended period for repair [1/10/02] morning, knocking out power  
  Bellevue area is approximately 50-70 ft high and and stabilization of slide area. Slide to 1,500 customers, toppling several  
    100-ft wide. Possible human influence. reportedly caused power outage and trees onto the road and causing the  
    "City officials think the January 10 evacuation of nearby homes. evacuation of nearby homes."  
    slide was caused in part by fill soil that   (Seattletimes.com, 1/12/02).  
    was placed on the private property…"      
    " (Seattletimes.com, 1/26/02).      
           
55 3100 block of W Harley St. Shallow colluvial slide. Slope height is Occurred just east of condominium. On or before 1/10/02 Y
    aproximately 25 feet.  Possible No structural damage reported. (unpub. City of Seattle database, 2002)  
    human influence (cutting of trees on      
    slope).         
           
56 9200 block of 3rd Ave. SW Shallow slide. Slope is approximately Movement of fill. Concrete curb On or before 1/15/02 Y
    10 ft. high. Possible human influence. broken. (unpub. City of Seattle database, 2002)  
           
57 4500 block of W Dravus St. Shallow colluvial slide. Slope height is Landslide debris on roadway. On or before 1/25/02 Y
    approximately 110 feet.   (unpub. City of Seattle database, 2002)  
           
           
58 6700 block of 8th Ave. NE, * Retaining wall (16-ft high) failure City received notificaton/request Y
  Seattle   onto sidewalk/street.  regarding retaining wall on 1/25/02  
        (unpub. City of Seattle database,  
         2/6/02).  
           
59 11900 block of Lakeside Pl. NE, Shallow slide/ debris flow on steep No damage to structures. "The residents said the slide was first Y
  Seattle slope adjacent to roadway. Slide area   noticed on Wednesday (1/30/02)….."  
    is approximately 25-ft wide and 30-   (Bill Benzer, City of Seattle, e-mail  
    40 ft long.   commun., 2/5/02).  

* Descriptive information missing or insufficient.
 1 1 ft = 0.3048 m

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