Big Rock

Malibu, California
Managed by LA Waterkeeper

It is a narrow rocky beach with two accesses. The only open access way is located between 20000 and 19958 PCH. The other is located next to Moonshadows’ restaurant and 20340 Pacific Coast Highway, but has been closed for repairs due to storm damage for many years. There is very limited on-street parking, and much of it is marked with illegal “No Parking” signs posted by the residents in the public right-of-way. The rocky shores make for some excellent shore fishing, scuba diving, and kayaking. On strong south and west swells, Big Rock produces some nice surf. No Facilities.

WATER QUALITY
  • Met water quality standards less than 60% of the time
  • Historical Status
  • This status is based on the latest sample, taken on July 2nd, 2018. LA Waterkeeper updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on at
For water quality icon legend, click:   
CURRENT WEATHER
17°C
Mostly clear
  • Report Pollution
MONITORING FREQUENCY

Big Rock is sampled weekly from January 1st to December 31st

SOURCE INFORMATION

Beach water is tested either once a week or 5 days a week by the City of Los Angeles Environmental Monitoring Division (EMD), County of Los Angeles Department of Health Services (LACDHS), and Sanitation Districts of Los Angeles County (LACSD). Freshwater swimming holes, falls and creeks are tested by Council for Watershed Health (CWH) approximately once a week in the summer.

Sample results are emailed from EMD and CWH to LA Waterkeeper, who updates the swim status and information in Swim Guide.

In California, maximum levels for bacteria are established for recreational open beach waters. Single sample maximum levels are 104 Enterococcus /100 ml; and 400 fecal coliform/100 ml; and 10,000 total coliform /100 ml. In waters designated for contact recreation, the median fecal coliform density based on the five most recent samples for any 30-day period shall not exceed 200/100 ml, Fecal and Enterococci density shall not exceed 35/100 ml. Monitoring frequency varies across jurisdictions, most popular beaches are often monitored 5 days a week.

In Los Angeles County bacteriological objectives for freshwater recreation are based on e.coli density. The 30 day geometric mean e.coli density shall not exceed 126/100ml and a single sample limit not to exceed 235/100ml.

Swimmers are advised not to swim within 100 feet of a flowing storm drain. Swimmers are also advised to stay out of the water for 72 hours following a rain event in the area.

WATER QUALITY GRAPH

Big Rock

Malibu, California
Managed by LA Waterkeeper
WATER QUALITY
  • Met water quality standards less than 60% of the time
  • Historical Status
  • This status is based on the latest sample, taken on July 2nd, 2018. LA Waterkeeper updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on at
For water quality icon legend, click:   
CURRENT WEATHER
17°C
Mostly clear

It is a narrow rocky beach with two accesses. The only open access way is located between 20000 and 19958 PCH. The other is located next to Moonshadows’ restaurant and 20340 Pacific Coast Highway, but has been closed for repairs due to storm damage for many years. There is very limited on-street parking, and much of it is marked with illegal “No Parking” signs posted by the residents in the public right-of-way. The rocky shores make for some excellent shore fishing, scuba diving, and kayaking. On strong south and west swells, Big Rock produces some nice surf. No Facilities.

  • Report Pollution
MONITORING FREQUENCY

Big Rock is sampled weekly from January 1st to December 31st

SOURCE INFORMATION

Beach water is tested either once a week or 5 days a week by the City of Los Angeles Environmental Monitoring Division (EMD), County of Los Angeles Department of Health Services (LACDHS), and Sanitation Districts of Los Angeles County (LACSD). Freshwater swimming holes, falls and creeks are tested by Council for Watershed Health (CWH) approximately once a week in the summer.

Sample results are emailed from EMD and CWH to LA Waterkeeper, who updates the swim status and information in Swim Guide.

In California, maximum levels for bacteria are established for recreational open beach waters. Single sample maximum levels are 104 Enterococcus /100 ml; and 400 fecal coliform/100 ml; and 10,000 total coliform /100 ml. In waters designated for contact recreation, the median fecal coliform density based on the five most recent samples for any 30-day period shall not exceed 200/100 ml, Fecal and Enterococci density shall not exceed 35/100 ml. Monitoring frequency varies across jurisdictions, most popular beaches are often monitored 5 days a week.

In Los Angeles County bacteriological objectives for freshwater recreation are based on e.coli density. The 30 day geometric mean e.coli density shall not exceed 126/100ml and a single sample limit not to exceed 235/100ml.

Swimmers are advised not to swim within 100 feet of a flowing storm drain. Swimmers are also advised to stay out of the water for 72 hours following a rain event in the area.

WATER QUALITY GRAPH



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