Lawson's Landing

Dillon Beach, California
Managed by The Swim Guide

This popular long stretch of beach is located at the mouth of Tomales Bay and the Pacific Ocean. Lawson's Landing was first established in 1929 by Howard Lawson and offers an array of activities and services. Individuals are able to participate in fishing, clamming, kayaking, biking, hiking, camping and bird watching. Lawson's Landing is part of Dillon Beach which was settled by George Dillon in 1858. Dillon Beach is a salt water beach which is perfect for surfing, beach walking and is very dog friendly. There are cafes and a general store nearby and the beach is quite popular on the weekends. About 1.5 miles (2.4 km) North of Dillon Beach there is a protected area called Estero de San Antonio State Marine Recreational Management Area which helps to conserve ocean wildlife and marine ecosystems.

WATER QUALITY
  • Meets water quality standards
  • Current Status
  • This status is based on the latest sample, taken on . The Swim Guide 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
11°C
Clear
MONITORING FREQUENCY

Lawson's Landing is sampled weekly from April 1st to October 31st

SOURCE INFORMATION

Marin County Environmental Health Services collects samples at this beach every Tuesday from April 1st - October 31st and tested for levels of total coliform, fecal coliform and enterococcus. Results are typically available to the public before the weekend. Swim Guide checks daily for updates during the monitoring season.

The standards for indicator bacteria are as follows:

Single sample maximum
Total Coliform > 10,000 MPN (Most Probable Number) / 100 ml of water
Fecal Coliform > 400 MPN / 100 ml
Enterococcus > 104 MPN / 100 ml

Geometric Mean (5 samples collected over a 30 day period)
Total Coliform > 1,000 MPN / 100 ml of water
Fecal Coliform > 200 MPN / 100 ml
Enterococcus > 33 MPN / 100 ml

A coastal beach is marked Green when bacteria levels for a single day and geometric mean are below the standards mentioned.

A coastal beach is marked Red when bacteria levels for a single day or the geometric mean are above the standards mentioned.

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

WATER QUALITY GRAPH

Lawson's Landing

Dillon Beach, California
Managed by The Swim Guide

WATER QUALITY
  • Meets water quality standards
  • Current Status
  • This status is based on the latest sample, taken on . The Swim Guide 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
11°C
Clear

This popular long stretch of beach is located at the mouth of Tomales Bay and the Pacific Ocean. Lawson's Landing was first established in 1929 by Howard Lawson and offers an array of activities and services. Individuals are able to participate in fishing, clamming, kayaking, biking, hiking, camping and bird watching. Lawson's Landing is part of Dillon Beach which was settled by George Dillon in 1858. Dillon Beach is a salt water beach which is perfect for surfing, beach walking and is very dog friendly. There are cafes and a general store nearby and the beach is quite popular on the weekends. About 1.5 miles (2.4 km) North of Dillon Beach there is a protected area called Estero de San Antonio State Marine Recreational Management Area which helps to conserve ocean wildlife and marine ecosystems.

MONITORING FREQUENCY

Lawson's Landing is sampled weekly from April 1st to October 31st

SOURCE INFORMATION

Marin County Environmental Health Services collects samples at this beach every Tuesday from April 1st - October 31st and tested for levels of total coliform, fecal coliform and enterococcus. Results are typically available to the public before the weekend. Swim Guide checks daily for updates during the monitoring season.

The standards for indicator bacteria are as follows:

Single sample maximum
Total Coliform > 10,000 MPN (Most Probable Number) / 100 ml of water
Fecal Coliform > 400 MPN / 100 ml
Enterococcus > 104 MPN / 100 ml

Geometric Mean (5 samples collected over a 30 day period)
Total Coliform > 1,000 MPN / 100 ml of water
Fecal Coliform > 200 MPN / 100 ml
Enterococcus > 33 MPN / 100 ml

A coastal beach is marked Green when bacteria levels for a single day and geometric mean are below the standards mentioned.

A coastal beach is marked Red when bacteria levels for a single day or the geometric mean are above the standards mentioned.

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

WATER QUALITY GRAPH



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