122:
trails have closed in the
Abalone Cove Reserve, Filiorum Reserve, Forrestal Reserve, and Portuguese Bend Reserve areas. In September 2024, more than 200 homeowners had to evacuate the Portuguese Bend and Seaview areas. Several homes have collapsed or have been made unlivable. The city issued an evacuation warning for residents; the landslides are moving at a rate of three-fourths to one foot per week. Gas to the Portuguese Bend neighborhood has been shutoff since August 2024. For safety reason, local utility companies planned to terminate all electricity for impacted residents.
894:
Taylor, Ronald B. Land Moves but They Won’t : Rolling Hills: The Flying
Triangle is sliding again, destroying houses and leaving concrete debris perched dangerously near some residents. But those who remain have learned to adapt and are resigned to the problem. Los Angeles Times. Dec. 17, 1992.
95:
In 1978, residents noticed cracks on Palos Verdes Drive South, and the upper part of the slide may have started to shift. That same year, the city restricted building new homes in the areas impacted by the landslides, "Landslide
Moratorium Map." Since 1980, efforts to control landslide movement have
71:
landslide was activated in 1956, before Rancho Palos Verdes was incorporated as a city. Beginning in
September 1956 and continuing until early 1957, the area experienced a landslide concurrent with the construction of a road (the Crenshaw Boulevard extension, south of Crest Road) along the top of an
121:
The
Portuguese Bend Landslide is a highly active landslide area that covers approximately 240 acres. Since Spring 2023, there has been noticeable land movement and collateral damage in the Portuguese Bend Beach Club, Portuguese Bend Community Association, and Seaview neighborhoods. Several miles of
135:
In Summer 2024, City officials informed residents that they have identified additional land movements and landslides for Rancho Palos Verdes. The new, deeper slide appears to be moving faster and deeper, shifting the city's strategy from individual landslide event response to a broader strategy to
104:
The
Portuguese Beach Club landslide is a minor slide within the area's landslide complex. In 2024, residents of Seaview and the Beach Club filed a lawsuit against the City of Rancho Palos Verdes. In 2024, the Beach Club area experienced major deformation along Seawall Road, approximately four to
58:
sits on four out of five sub-slides of the
Ancient Altamira Landslide Complex, also referred to as the Greater Portuguese Bend Landslide Complex. The Complex encompasses four historically active landslide areas within the city limits: Abalone Cove Landslide; Beach Club Landslide; Klondike Canyon
144:
In 2023, FEMA awarded a $ 23.3 million grant to Rancho Palos Verdes for the
Portuguese Mud/Landslide Community Infrastructure Resilience Project . The goal of the grant is to make improvements in the existing groundwater extraction systems and to install new subsurface water extraction systems.
91:
area. The lower part of the landslide started to move in
February 1974. The "Abalone Cove Slide" was moving so slow that geologists did not verify that it was an actual slide until 1976, after it had damaged roughly twenty homes. It is estimated that the landslides damaged nearly 50 homes and
195:
In 1979, residents in the Flying
Triangle Landslide area noticed cracks in the main road leading to their neighborhood. The landslide area spanned approximately 90 acres and damaged and destroyed several homes. Impacted homeowners received roughly $ 16 million in compensatory setttlements.
729:
Proffer, Kathleen A. Ground water in the Abalone Cove Landslide, Palos Verdes Peninsula, Southern California (in Landslides/landslide mitigation, James E. Slosson (editor), Arthur G. Keene (editor) and Jeffrey A. Johnson (editor)). Reviews in Engineering Geology. 1992. 9: 69-82.
517:
City Council Agenda Report: Consideration and possible action to receive an update report on the Portuguese Bend Landslide / Emergency Hydraugers Project and a 10-day report on the proposed extension of the Interim Urgency Ordinance. City of Rancho Palos Verdes. August 20, 2024.
153:
The RPV Landslide Complex Working Group meets virtually weekly to plan, coordinate, and implement actions for minimizing land movement and reducing community and property damages. The members of this group include representatives of Abalone Cove Landslide Abatement Districts;
207:
In 2024, Congressman Ted Lieu secured one million dollars for the Rolling Hills Landslide Mitigation Project, which is expected to improve wastewater flow and reduce the risk of additional landslides in the Flying Triangle landslide area within the city boundaries.
37:
As early as the 1920s, the area was identified as a potentially hazardous landslide area, yet real estate construction and development gained traction in the 1940s and 1950s. In 2024, the Palos Verdes Peninsula was rocked with another round of landslides.
72:
ancient landslide complex. The impacted areas ranged from several acres to roughly two square miles A 1958 video newsreel showed the effects of the landslide’s impact: 140 of the 170 homes in the area were destroyed or displaced.
28:
and land movements. The Palos Verdes Peninsula is home to the cities of Palos Verdes Estates, Rancho Palos Verdes, Rolling Hills and Rolling Hills Estates, and the unincorporated communities of Academy Hills and Westfield.
826:
Bartholomew, Dana. Rancho Palos Verdes extends building moratorium after landslides. Emergency declaration could ban outdoor watering and require draining leaky pools. The Real Deal. November 17, 2023.
731:
292:
Toohey, Grace, and Nathan Solis, Connor Sheets, Jeong Park. What's causing luxury homes in Rolling Hills Estates to slide down a canyon? Here's what we know. Los Angeles Times. July 10, 2023.
113:
The Klondike Canyon has been noted for landslides. Renewed movement occurred in 1979, and a Geologic Hazard Abatement Districts was created to study the Klondike Canyon landslides in 1982.
232:
On July 8, 2023, the Peartree Lane Landslide destroyed several homes in Rolling Hills Estates. Townhouses in the area slumped into a canyon. This land movement may have started in 2022.
445:
Douglas, Robert. The Creepy (Slow Moving) Landslides of the Portuguese Bend Area. Association of Environmental and Engineering Geologists. Special Publication, No. 24. February 2014.
866:
555:
851:
907:
Rep Leiu Secures Nearly $ 2.5 Million for Local Landslide and Flood Mitigation Efforts. Press Release. Congressman Ted W. Lieu (D-Los Angeles County). March 13, 2024.
697:
797:
Orme, Antony R. Mass Movement and SeaclifF Retreat along the Southern California Coast. Bulletin. Southern California Academy of Sciences. 90(2), 1991, pp. 58-79.
174:; Portuguese Bend Beach Club Homeowners Association; Portuguese Bend Community Association; Rolling Hills Community Association; Seaview Residential Association;
355:
163:
782:
Sievertson, Makenna. Rancho Palos Verdes says it's dealing with a much larger and faster moving landslide. LAist. Updated Sep 4, 2024. Published Aug 21, 2024.
732:
https://pubs.geoscienceworld.org/gsa/books/edited-volume/830/chapter-abstract/4850113/Ground-water-in-the-A-baione-Cove-landslide-Palos?redirectedFrom=fulltext
132:
declared a state of emergency in the City of Rancho Palos Verdes. The city has extended a construction moratorium for the landslide areas until October 2025.
908:
967:
481:
Romine, Taylor, and Ray Sanchez. Concerns of ‘more landslides’ in Southern California after portion of cliff collapses onto beach. CNN. December 10, 2022.
783:
458:
340:
536:
503:
1051:
1011:
878:
812:
354:
Jacobs, Lisa. Rancho Palos Verdes landslide problem is ‘bigger than our city’ say leaders, residents. Long Beach Press-Telegram. August 29, 2024.
171:
167:
554:
Toohey, Grace. Winter rains fuel ‘unprecedented’ acceleration, expansion of landslides in Rancho Palos Verdes. Los Angeles Times. Feb. 18, 2024.
1071:
636:"California: Area has great view, foggy future : A legal fight continues over whether to build on the oceanfront lots of Portuguese Bend"
980:
867:
https://timesofsandiego.com/life/2024/09/07/as-destructive-landslides-continue-in-rancho-palos-verdes-life-is-like-camping/#google_vignette
216:
Rollings Hills Estates is located on the northern side of the Palos Verdes Peninsula, an area that has a history of documented landslides.
556:
https://www.latimes.com/california/story/2024-02-18/ancient-landslides-on-palos-verdes-peninsula-accelerating-winter-rains-increase-threat
1036:
850:
Garcia, Karen. Landslides bring uncertainty, fear to Rancho Palos Verdes. How much worse will it get? Los Angeles Times. Sept. 5, 2024.
571:
Knoll, Corina and Loren Elliott. In a Scenic California Town, Worsening Landslides Force Power Shutoffs. New York Times. Sept. 2, 2024.
1076:
1056:
852:
https://www.latimes.com/california/story/2024-09-05/unprecedented-landslides-have-rancho-palos-verdes-asking-how-much-worse-can-it-get
923:
828:
224:
In 1997, employees in a Rolling Hills Estates office park witnessed crumbling walls and buckling sidewalks and had to be evacuated.
1046:
457:
Jacobs, Lisa. Rancho Palos Verdes residents rally to solve landslide woes on their own. Whittier Daily News. September 7, 2024.
939:
175:
701:
339:
Cann, Christopher. Power outages could last weeks in affluent SoCal city plagued by landslides. USA Today. September 4, 2024.
1061:
356:
https://www.presstelegram.com/2024/08/24/rancho-palos-verdes-landslide-problem-is-bigger-than-our-city-say-leaders-residents/
877:
Hixon, Michael. Rancho Palos Verdes received $ 23 million grant to stabilize landslide area. Daily Breeze. August 30, 2023.
273:
Bernhardt, Roger, "Construction Moratorium as a Taking Monks v City of Rancho Palos Verdes, 2008." Publications. Paper 273.
535:
Governor Newsom proclaims State of Emergency in the City of Rancho Palos Verdes. Governor Gavin Newsom. September 3, 2024.
1021:
909:
https://lieu.house.gov/media-center/press-releases/rep-lieu-secures-nearly-25-million-local-landslide-and-flood-mitigation
21:
968:
https://www.rollinghillsestates.gov/departments/public-safety/emergency-preparedness/peartree-lane-land-movement-incident
482:
1026:
59:
Landslide; and Portuguese Bend Landslide; as well as the areas outside of the city’s border of those named landslides.
1041:
784:
https://laist.com/news/climate-environment/rancho-palos-verdes-landslide-the-city-changes-its-strategy-to-slow-it-down
635:
459:
https://www.whittierdailynews.com/2024/09/07/rancho-palos-verdes-residents-rally-to-solve-landslide-woes-on-their-own/
341:
https://www.usatoday.com/story/news/nation/2024/09/04/southern-california-landslides-rancho-palos-verdes/75067503007/
1016:
179:
749:
Stein, George. Landslide Settlement Calls for Homeowners to Share $ 5 Million. Los Angeles Times. Sept. 13, 1987.
537:
https://www.gov.ca.gov/2024/09/03/governor-newsom-proclaims-state-of-emergency-in-the-city-of-rancho-palos-verdes/
504:
https://www.cbsnews.com/losangeles/news/rancho-palos-verdes-faces-deeper-larger-landslide-threat-city-report-says/
502:
Sharp, Julie. Rancho Palos Verdes faces deeper, larger landslide threat, city report says. KCAL. August 21, 2024.
922:
Ober, Holly. 2023 Rolling Hills Estates landslide likely began the winter before. Newsroom. UCLA. July 12, 2024.
879:
https://www.dailybreeze.com/2023/08/30/rancho-palos-verdes-received-23-million-grant-to-stabilize-landslide-area/
1031:
813:
https://www.fema.gov/case-study/california-rancho-palos-verdes-portuguese-mudlandslide-community-infrastructure
685:
293:
155:
865:
As Destructive Landslides Continue in Rancho Palos Verdes, Life Is Like Camping. AP News. September 8, 2024.
811:
California: Rancho Palos Verdes Portuguese Mud/Landslide Community Infrastructure Resilience Project. FEMA.
572:
1066:
17:
955:
470:
896:
750:
672:
Monks v. City of Rancho Palos Verdes, 167 Cal.App.4th 263, 84 Cal. Rptr. 3d 75 (Cal. Ct. App. 2008).
608:
46:
In December 2022, a coastal cliff landslide was recorded in Palos Verdes Estates (33.804, -118.394).
762:
469:
Petley, Dave. Palos Verdes Estates: a coastal cliff landslide captured on video. December 4, 2022.
126:
55:
924:
https://newsroom.ucla.edu/releases/2023-rolling-hills-estates-landslide-likely-began-winter-before
829:
https://therealdeal.com/la/2023/11/17/rancho-palos-verdes-extends-building-halt-after-landslides/
76:
673:
584:
643:
199:
In 1987, there was a documented landslide in the Flying Triangle area above Portuguese Bend.
940:
https://www.washingtonpost.com/weather/2024/09/03/california-landslides-rancho-palos-verdes/
616:
307:"Geology of the Palos Verdes Peninsula, Los Angeles CA: A Field Guide For the Non-Geologist"
68:
612:
934:
Dance, Scott. Why landslides are suddenly tearing homes apart in Southern California.
483:
https://www.cnn.com/2022/12/10/us/california-landslide-palos-verdes-estates/index.html
1005:
761:
Staff Report: Appeal Substantial Issue. California Coastal Commission. May 24, 2001.
620:
159:
257:
129:
88:
981:"'Astonishing' collapse sends Rolling Hills Estates homes toward canyon floor"
647:
274:
686:
https://www.rpvca.gov/DocumentCenter/View/5553/Portuguese-Bend-Landslide-PDF
294:
https://www.yahoo.com/news/whats-causing-luxury-rolling-hills-192725410.html
25:
306:
573:
https://www.nytimes.com/2024/09/02/us/landslides-rancho-palos-verdes.html
105:
five feet across the beach, and potentially into an offshore slide area.
311:
California State University Dominguez Hills, Department of Earth Science
164:
Los Angeles County Department of Public Works Sanitary Sewer Maintenance
583:
1957 Supporting Documents Earth Movement. City of Rancho Palos Verdes.
956:
https://www.latimes.com/archives/la-xpm-1997-02-28-me-33207-story.html
599:
Linden, Karl Vonder (December 1989). "The Portuguese bend landslide".
471:
https://blogs.agu.org/landslideblog/2022/12/14/palos-verdes-estates-1/
415:
897:
https://www.latimes.com/archives/la-xpm-1992-12-17-me-2798-story.html
751:
https://www.latimes.com/archives/la-xpm-1987-09-13-cb-7355-story.html
427:
426:
About Palos Verdes. Palos Verdes Peninsula Association of Realtors.
140:
Portuguese Mud/Landslide Community Infrastructure Resilience Project
950:
Johnson, Tracy, and Jeff Leeds. Buildings continue their slide.
763:
https://documents.coastal.ca.gov/reports/2001/6/Th18a-6-2001.pdf
403:
446:
674:
https://casetext.com/case/monks-v-city-of-rancho-palos-verdes
966:
Peartree Lane Land Movement. City of Rolling Hills Estates.
585:
https://www.rpvca.gov/451/Palos-Verdes-Drive-South-Landslide
519:
379:
684:
Portguese Bend Landslide. Rancho Palos Verdes, California.
369:, Cal: Court of Appeal, 2nd Appellate Dist., 8th Div. 2013
87:
From 1974 to 1978, an 80 acre landslide occurred in the
391:
96:
involved removing ground water from the landslide mass.
149:
Rancho Palos Verdes Landslide Complex Working Group
162:; Klondike Canyon Landslide Abatement Districts;
75:In 1961, area homeowners filed a lawsuit against
513:
511:
258:https://www.rpvca.gov/1707/Land-Movement-Updates
79:and won a settlement of roughly $ 10 million.
979:Toohey, Grace; Solis, Nathan (July 11, 2023).
846:
844:
842:
840:
838:
836:
745:
743:
741:
739:
567:
565:
563:
778:
776:
774:
772:
770:
288:
286:
284:
282:
8:
668:
666:
664:
269:
267:
265:
256:Land Movement Updates. Rancho Palos Verdes.
822:
820:
725:
723:
721:
719:
594:
592:
441:
439:
437:
435:
890:
888:
886:
550:
548:
546:
544:
275:http://digitalcommons.law.ggu.edu/pubs/273
252:
250:
248:
203:Rolling Hills Landslide Mitigation Project
136:address all landslide hazards and issues.
861:
859:
531:
529:
527:
498:
496:
494:
492:
490:
350:
348:
918:
916:
793:
791:
807:
805:
803:
335:
333:
331:
329:
327:
244:
172:Palos Verdes Peninsula Land Conservancy
168:Los Angeles County Sanitation Districts
367:Joannou v. City of Rancho Palos Verdes
117:Portuguese Bend and Seaview Landslide
7:
634:Gottlieb, Jeff (November 13, 2009).
416:https://www.rollinghillsestates.gov
305:McNulty, Dr. Brendan (June 2012).
14:
428:https://www.pvpar.com/aboutpv.php
1052:Natural disasters in California
1012:Landslides in the United States
176:Southern California Gas Company
63:1956 Portuguese Bend Landslide
1:
1072:Hazards of outdoor recreation
404:https://www.rolling-hills.org
22:Los Angeles metropolitan area
698:"Portuguese Bend Earth Flow"
621:10.1016/0013-7952(89)90037-9
447:https://documents.rpvca.gov/
92:depressed property values.
1093:
1037:Environmental soil science
180:Southern California Edison
20:, a coastal region of the
1077:Neighborhood associations
1057:Environment-related lists
520:https://rpv.granicus.com/
380:https://www.pvestates.org
220:Office Park land movement
191:Flying Triangle Landslide
109:Klondike Canyon Landslide
156:California Water Service
24:, has a long history of
1047:Environmental disasters
414:Rolling Hills Estates.
228:Peartree Lane Landslide
378:Palos Verdes Estates.
182:; and area residents.
125:On September 3, 2024,
18:Palos Verdes Peninsula
1062:Geology of California
954:. February 28, 1997.
938:. September 3, 2024.
392:https://www.rpvca.gov
390:Rancho Palos Verdes.
212:Rolling Hills Estates
160:City of Rolling Hills
1022:Coastal construction
704:on February 17, 2013
100:Beach Club Landslide
42:Palos Verdes Estates
1027:Coastal engineering
613:1989EngGe..27..301L
601:Engineering Geology
127:California Governor
56:Rancho Palos Verdes
50:Rancho Palos Verdes
1042:Lists of disasters
83:Abalone Cove Slide
77:Los Angeles County
1017:Coastal geography
985:Los Angeles Times
952:Los Angeles Times
640:Los Angeles Times
1084:
996:
995:
993:
991:
976:
970:
964:
958:
948:
942:
932:
926:
920:
911:
905:
899:
892:
881:
875:
869:
863:
854:
848:
831:
824:
815:
809:
798:
795:
786:
780:
765:
759:
753:
747:
734:
727:
714:
713:
711:
709:
700:. Archived from
694:
688:
682:
676:
670:
659:
658:
656:
654:
631:
625:
624:
607:(1–4): 301–373.
596:
587:
581:
575:
569:
558:
552:
539:
533:
522:
515:
506:
500:
485:
479:
473:
467:
461:
455:
449:
443:
430:
424:
418:
412:
406:
400:
394:
388:
382:
376:
370:
364:
358:
352:
343:
337:
322:
321:
319:
317:
302:
296:
290:
277:
271:
260:
254:
1092:
1091:
1087:
1086:
1085:
1083:
1082:
1081:
1032:Coastal erosion
1002:
1001:
1000:
999:
989:
987:
978:
977:
973:
965:
961:
949:
945:
936:Washington Post
933:
929:
921:
914:
906:
902:
893:
884:
876:
872:
864:
857:
849:
834:
825:
818:
810:
801:
796:
789:
781:
768:
760:
756:
748:
737:
728:
717:
707:
705:
696:
695:
691:
683:
679:
671:
662:
652:
650:
633:
632:
628:
598:
597:
590:
582:
578:
570:
561:
553:
542:
534:
525:
516:
509:
501:
488:
480:
476:
468:
464:
456:
452:
444:
433:
425:
421:
413:
409:
402:Rolling Hills.
401:
397:
389:
385:
377:
373:
365:
361:
353:
346:
338:
325:
315:
313:
304:
303:
299:
291:
280:
272:
263:
255:
246:
241:
235:
230:
222:
214:
205:
193:
188:
151:
142:
119:
111:
102:
85:
69:Portuguese Bend
65:
52:
44:
35:
12:
11:
5:
1090:
1088:
1080:
1079:
1074:
1069:
1064:
1059:
1054:
1049:
1044:
1039:
1034:
1029:
1024:
1019:
1014:
1004:
1003:
998:
997:
971:
959:
943:
927:
912:
900:
882:
870:
855:
832:
816:
799:
787:
766:
754:
735:
715:
689:
677:
660:
626:
588:
576:
559:
540:
523:
507:
486:
474:
462:
450:
431:
419:
407:
395:
383:
371:
359:
344:
323:
297:
278:
261:
243:
242:
240:
237:
229:
226:
221:
218:
213:
210:
204:
201:
192:
189:
187:
184:
150:
147:
141:
138:
118:
115:
110:
107:
101:
98:
84:
81:
64:
61:
51:
48:
43:
40:
34:
31:
13:
10:
9:
6:
4:
3:
2:
1089:
1078:
1075:
1073:
1070:
1068:
1067:Geomorphology
1065:
1063:
1060:
1058:
1055:
1053:
1050:
1048:
1045:
1043:
1040:
1038:
1035:
1033:
1030:
1028:
1025:
1023:
1020:
1018:
1015:
1013:
1010:
1009:
1007:
986:
982:
975:
972:
969:
963:
960:
957:
953:
947:
944:
941:
937:
931:
928:
925:
919:
917:
913:
910:
904:
901:
898:
891:
889:
887:
883:
880:
874:
871:
868:
862:
860:
856:
853:
847:
845:
843:
841:
839:
837:
833:
830:
823:
821:
817:
814:
808:
806:
804:
800:
794:
792:
788:
785:
779:
777:
775:
773:
771:
767:
764:
758:
755:
752:
746:
744:
742:
740:
736:
733:
726:
724:
722:
720:
716:
703:
699:
693:
690:
687:
681:
678:
675:
669:
667:
665:
661:
649:
645:
641:
637:
630:
627:
622:
618:
614:
610:
606:
602:
595:
593:
589:
586:
580:
577:
574:
568:
566:
564:
560:
557:
551:
549:
547:
545:
541:
538:
532:
530:
528:
524:
521:
514:
512:
508:
505:
499:
497:
495:
493:
491:
487:
484:
478:
475:
472:
466:
463:
460:
454:
451:
448:
442:
440:
438:
436:
432:
429:
423:
420:
417:
411:
408:
405:
399:
396:
393:
387:
384:
381:
375:
372:
368:
363:
360:
357:
351:
349:
345:
342:
336:
334:
332:
330:
328:
324:
312:
308:
301:
298:
295:
289:
287:
285:
283:
279:
276:
270:
268:
266:
262:
259:
253:
251:
249:
245:
238:
236:
233:
227:
225:
219:
217:
211:
209:
202:
200:
197:
190:
186:Rolling Hills
185:
183:
181:
177:
173:
169:
165:
161:
157:
148:
146:
139:
137:
133:
131:
128:
123:
116:
114:
108:
106:
99:
97:
93:
90:
82:
80:
78:
73:
70:
62:
60:
57:
49:
47:
41:
39:
32:
30:
27:
23:
19:
988:. Retrieved
984:
974:
962:
951:
946:
935:
930:
903:
873:
757:
706:. Retrieved
702:the original
692:
680:
651:. Retrieved
639:
629:
604:
600:
579:
477:
465:
453:
422:
410:
398:
386:
374:
366:
362:
314:. Retrieved
310:
300:
234:
231:
223:
215:
206:
198:
194:
152:
143:
134:
130:Gavin Newsom
124:
120:
112:
103:
94:
89:Abalone Cove
86:
74:
66:
54:The city of
53:
45:
36:
15:
1006:Categories
708:January 9,
239:References
26:landslides
653:April 10,
648:0458-3035
316:April 10,
990:July 11,
609:Bibcode
33:History
646:
992:2023
710:2013
655:2019
644:ISSN
318:2019
67:The
16:The
617:doi
1008::
983:.
915:^
885:^
858:^
835:^
819:^
802:^
790:^
769:^
738:^
718:^
663:^
642:.
638:.
615:.
605:27
603:.
591:^
562:^
543:^
526:^
510:^
489:^
434:^
347:^
326:^
309:.
281:^
264:^
247:^
178:;
170:;
166:;
158:;
994:.
712:.
657:.
623:.
619::
611::
320:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.