Greater Portuguese
Bend Landslide
Complex
August 4, 2026
City Dewatering Wells
July 2026 Summary
• 9 Online
• Gallons Pumped
• April – 21M
• May – 19.5M
• June – 17.4M
• Totals:
▪ 539 Mgal
▪ 1,654 Acre-Feet
KCLAD Dewatering Wells
July 2026 Summary
• 2 Operating
• Pumping Rate Steady
• Gallons Pumped
• May - 9.5M
• June – 8.7M
ACLAD Dewatering Wells
July 2026 Summary
• 14 Operating
• Pumping Rate Steady
• Gallons Pumped
• May – 4.8M
• June – 5.3M
City Winterization Plans
Site Description
Upper
Altamira
Clear debris, fill fissures,
replace/reset liner and
sandbags as necessary
Seaview
Graben
Replace/reset liner and
sandbags as necessary
Klondike
Canyon
Replace/reset liner and
sandbags as necessary
Kelvin
Canyon
Replace/reset liner and
sandbags as necessary
Portuguese
Canyon
Adjust site conditions to
facilitate proper drainage
• Implement ahead of 2026-27 rainy season
• Minimize groundwater infiltration at most
vulnerable points
Palos Verdes Drive South
AREA 1
AREA 2
• Implement
ahead of 2026-
27 rainy season
• Reduce
ponding
• Build passive
drainage
measures (less
pumping)
• Avoid road
closures
Palos Verdes Drive South
Area 1
Palos Verdes Drive South
Area 2
Overall Movement Rates
Oct 2023 – July 2026
Movement Rate Trends
• Abalone Cove Landslide
▪ Dec 2025 6.6% to 2.11 in/week
▪ Jan 2026 5.7% to 2.23 in/week
▪ Feb 2026 3.2% to 2.16 in/week
▪ Mar 2026 12.0% to 1.90 in/week
▪ April 2026 12.6% to 1.66 in/week
▪ May 2026 9.6% to 1.50 in/week
▪ June 2026 6.7% to 1.40 in/week
• Klondike Canyon Landslide
▪ No Horizontal or Vertical Movement w/ one exception:
▪ KC30 – close to PBL/KCL boundary - 0.07 ft between
June 2, 2026 and July 7, 2026
• Portuguese Bend Landslide
▪ Nov 2025 8.1% to 1.24 in/week
▪ Dec 2025 8.9% to 1.35 in/week
▪ Jan 2026 7.4% to 1.45 in/week
▪ Feb 2026 5.5% to 1.37 in/week
▪ Mar 2026 11.7% to 1.21 in/week
▪ April 2026 9.9% to 1.09 in/week
▪ May 2026 11% to 0.97 in/week
▪ June 2026 3.1% to 0.94 in/week
2025-26 Rainy Season: 14.6 inches or 106% of Seasonal Average Movement Rate Summary
Movement Rate Summary
PVDS Movement Data
Survey
Point
Oct 2022
Factor
Current
Factor
PB06 1 6.53
PB07 1 6.51
PB08 1 6.53
PB09 1 6.33
PB12 1 4.15
PB13 1 2.28
Average 1 5.34
Utilities
• Sanitary Sewer – Portuguese Bend Community
• 3 Locations repaired along Narcissa Road and Cinnamon Lane • Scheduling system-wide condition assessment via CCTV in August • Sanitary Sewer – Seaview Neighborhood – no activities • Sanitary Sewer – Portuguese Bend Beach Club – no activities • Cal Water – Smart meter installations began in April and completed last month • Communications - No updates since December 16, 2025
• So Cal Gas – No updates since June 16, 2026.
• SCE
• 84 homes re-energized (PBBC & Seaview), 2 KCLAD dewatering well meters • Remainin 7 homes in PBBC and Seaview will be re-energized upon successful completion of electrical inspection or completion of NEM-PTO (solar installations) Grant Summary
Grant Summary
FINANCIAL UPDATE
1. Receive/File Landslide Update
2. Extend PVDS temporary prohibition of one- and two-wheeled vehicles by 60 days
3. Extend local emergency declaration by 60 days
4. Extend de-energization emergency by 60 days
Recommended Council
Actions
Questions