Baker Beach at Lobos Creek

San Francisco, California
Managed by The Swim Guide

Lobos Creek is at the southern end of Baker Beach. It is the last free-flowing stream in San Francisco. Nearly half of the creek's annual flow is diverted from the creek to provide drinking water to the Presidio area. "Lobos" is the spanish word for "wolf".

COVID-19

Keep your distance from other people.

Practicing social distancing is essential right now. Follow the advice of the health experts. If your community has asked that you remain indoors and away from others, do so. Heading to the beach should only be considered an option if social distancing practices can be followed. Spending a day in any crowded place is the worst thing we can do for our most vulnerable right now and will counter the efforts to curb the virus’ spread.

For more information, please visit the World Health Organization public resource on COVID-19.

Water Quality
  • Passed water quality tests at least 95% of the time

  • Historical Status
  • This status is based on the latest sample, taken on July 6th, 2020. The Swim Guide updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on July 8th, 2020 at 12:46 PM.
For water quality icon legend, click:  
Current Weather
15°C
Clear and sunny
Monitoring Frequency

Baker Beach at Lobos Creek is sampled weekly from January 1st from December 31st.

Source Information

San Francisco Shoreline Beach Monitoring Program is a cooperative effort between Public Health Utilities Commission and the San Francisco Department of Public Health. Samples are collected year round, on a weekly basis and tested for 3 different bacterial indicators. Levels of total coliform, E.coli and enterococcus are analyzed by the quanti-tray method. Results are posted 18 - 24 hours after the samples are received by the laboratory. Health officials proactively notify the public and post and de-post beaches based upon preliminary results. Signs are posted at the beach in accordance with California standards and when a Combined Sewer System discharge occurs. Daily testing will occur and postings will remain until the discharge ceases and all bacteria levels drop below the following standards.

The standards for indicator bacteria are as follows:
Total Coliform > 10,000 MPN (Most Probable Number) / 100 ml of water
E.coli > 400 MPN / 100 ml
Enterocococcus > 104 MPN / 100 ml

A beach is marked Green when the levels of all three types of indicator bacteria are less than the standards stated.

A beach is marked Red when the levels of 1 or more types of indicator bacteria are above the standards stated.

A beach is marked Grey when there is no current or reliable monitoring information available.

Swim Guide checks daily for the latest results. Swimmers are encouraged to stay out of the water during, and up to 48 hours after heavy rainfall.

Water Quality Graph

Baker Beach at Lobos Creek

San Francisco, California
Managed by The Swim Guide

COVID-19

Keep your distance from other people.

Practicing social distancing is essential right now. Follow the advice of the health experts. If your community has asked that you remain indoors and away from others, do so. Heading to the beach should only be considered an option if social distancing practices can be followed. Spending a day in any crowded place is the worst thing we can do for our most vulnerable right now and will counter the efforts to curb the virus’ spread.

For more information, please visit the World Health Organization public resource on COVID-19.

Water Quality
  • Passed water quality tests at least 95% of the time
  • Historical Status
  • This status is based on the latest sample, taken on July 6th, 2020. The Swim Guide updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on July 8th, 2020 at 12:46 PM.
For water quality icon legend, click:  
Current Weather
15°C
Clear and sunny

Lobos Creek is at the southern end of Baker Beach. It is the last free-flowing stream in San Francisco. Nearly half of the creek's annual flow is diverted from the creek to provide drinking water to the Presidio area. "Lobos" is the spanish word for "wolf".

Monitoring Frequency

Baker Beach at Lobos Creek is sampled weekly from January 1st from December 31st.

Source Information

San Francisco Shoreline Beach Monitoring Program is a cooperative effort between Public Health Utilities Commission and the San Francisco Department of Public Health. Samples are collected year round, on a weekly basis and tested for 3 different bacterial indicators. Levels of total coliform, E.coli and enterococcus are analyzed by the quanti-tray method. Results are posted 18 - 24 hours after the samples are received by the laboratory. Health officials proactively notify the public and post and de-post beaches based upon preliminary results. Signs are posted at the beach in accordance with California standards and when a Combined Sewer System discharge occurs. Daily testing will occur and postings will remain until the discharge ceases and all bacteria levels drop below the following standards.

The standards for indicator bacteria are as follows:
Total Coliform > 10,000 MPN (Most Probable Number) / 100 ml of water
E.coli > 400 MPN / 100 ml
Enterocococcus > 104 MPN / 100 ml

A beach is marked Green when the levels of all three types of indicator bacteria are less than the standards stated.

A beach is marked Red when the levels of 1 or more types of indicator bacteria are above the standards stated.

A beach is marked Grey when there is no current or reliable monitoring information available.

Swim Guide checks daily for the latest results. Swimmers are encouraged to stay out of the water during, and up to 48 hours after heavy rainfall.

Water Quality Graph

  Beach Location Water Quality
San Francisco, California
San Francisco, California
San Francisco, California
San Francisco, California
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