Lake County Water Resources Department

Lake County Water Resources Department The Lake County Water Resources Department is responsible for managing the aquatic resources within

*Upper Lake Levee July Update*The upper Lake Levee system Mowing is just about done. This week after addressing some tec...
08/06/2026

*Upper Lake Levee July Update*
The upper Lake Levee system Mowing is just about done. This week after addressing some technical issues, the team is back at it. The Northern part of the Levee system was completed on July 23,2026. South side of the levee system started back up on July 29, 2026. As of today August 8, 2025, the team is about done with the southside of the levee system. Another issue came up and our awesome Central Garage team is coming out to save the day again.
More updates to come. Here is some pictures for your viewing pleasure.
Should you have any questions, Please feel free to reach out to Linda Rosas-Bill at (707) 263-2344 or email, [email protected]

Lake County Water Resources will be conducting their annual Aquatic Vegetation Control Program within Clear Lake. Aquati...
07/29/2026

Lake County Water Resources will be conducting their annual Aquatic Vegetation Control Program within Clear Lake. Aquatic herbicide spraying will begin this Wednesday 7/29 through early next week; spraying will start in the Lakeport area and move east towards Clearlake Oaks avoiding sensitive wildlife and nesting bird habitat. The objective of this herbicide application is to manage the growth of invasive aquatic plants and increase recreational opportunities to the public.
We welcome any questions or concerns and look forward to working with the community to ensure we maintain as many recreational opportunities as possible and to better our lake’s ecosystems.

Please feel free to contact us at (707) 263-2344

This week, the Lake County Water Resources Department deployed eight Slow No Wake buoys to help protect a Western Grebe ...
07/24/2026

This week, the Lake County Water Resources Department deployed eight Slow No Wake buoys to help protect a Western Grebe nesting colony near the Lake County Land Trust Preserve in Lakeport.

Western Grebes build floating nests among emergent vegetation, such as tules, making their nests especially vulnerable to waves created by boat wakes. These temporary buoys remind boaters to slow down while passing through the nesting area, helping protect the birds while still allowing everyone to enjoy the lake responsibly.

• The image below shows the location of the buoys.

In addition to installing the buoys, the Water Resources Department is taking several other steps to help protect Western Grebes during nesting season:
• Working with all approved contractors operating under Aquatic Plant Management (APM) permits to ensure herbicide applications are not conducted near areas where Western Grebes are nesting or congregating.
• Developing a County fishing tournament permit that requires participants to avoid creating wakes in designated Western Grebe nesting areas. Following these guidelines will help support future tournament opportunities while protecting important wildlife habitat.

Thank you to everyone who helps keep Clear Lake a great place for both wildlife and recreation!

Our team from Water Resources Department are set up for the Tule Festival. Stop by, get a sticker and some educational m...
07/24/2026

Our team from Water Resources Department are set up for the Tule Festival. Stop by, get a sticker and some educational materials. Thank you for the invitation.

Community Meeting. Plan for Reducing Flood Risk in Upper Lake. 6 p.m., Monday, June 29, 2026
06/29/2026

Community Meeting. Plan for Reducing Flood Risk in Upper Lake. 6 p.m., Monday, June 29, 2026

*Upper Lake Levee Update*The levee team is ramping up to start our annual mowing of the Upper lake Levee System starting...
06/25/2026

*Upper Lake Levee Update*
The levee team is ramping up to start our annual mowing of the Upper lake Levee System starting July 1, 2026 until done.
There are some exciting things happening this year on the Upper Lake Levee System. As things progress updates will be posted here.

As the mowing season starts, we kindly remind all who live adjacent to the levees. Please keep the areas around the levees (landside) clear of heavy equipment, burn piles, and other items that become a hazard for the mowing team to get around.

We will do our best to keep up with getting you the latest news here. Stay tuned for more updates.

Have questions? Contact Linda Rosas-Bill at [email protected]

Attention Boaters,Be Advised: All Vessels entering Clearlake must make contact with Ramp monitor and shall inspected by ...
06/24/2026

Attention Boaters,
Be Advised: All Vessels entering Clearlake must make contact with Ramp monitor and shall inspected by a mussel dog when present, with or without a Quagga Mussel sticker, NO EXCEPTIONS. Our Mussel dogs and ramp monitors are here to provide inspections/decontaminations. The mussel dogs will be present June 24th-27th at Redbud Park (14655 Lakeshore Dr, Clearlake, CA 95422) this week for the S***t Reese Big Bass Battle tournament in Clearlake, with another team of mussel dogs actively inspecting vessels at Library Park (200 Park St. Lakeport, CA 95453). Mussel inspection canine schedule is as follows:
Redbud:
June 24th- 6 am-1 pm (7 hours)
June 25th- 6 am-1 pm (7 hours)
June 26th - 6 am - 1 pm (7 Hours)
June 27th 5 am - 12 pm (7 Hours)
Library Park:
June 24th- 6 am-1 pm (7 hours)
June 25th- 6 am-1 pm (7 hours)
June 26th - 6 am - 1 pm (7 Hours)
June 27th 5 am - 12 pm (7 Hours)
Inspection Process Explained-
Inspector/ Ramp Monitor will conduct a thorough inspection that lasts 2-5 minutes (visually looking for Mussels, feeling for settlers and looking/listening for standing water), including but not limited to:
-Bilge pumps
-Motors
-Live wells
-Bait wells
-Ballast tanks
-Bladders
-All areas of standing water
Mussel dogs will be guided by their handler around the vessel specifically in areas where standing or unverifiable water would be which takes about 1-2 minutes. If the mussel dog inspection is passed, the boater will receive a yellow slip verifying that they were properly inspected and are deemed safe to enter Clearlake for a week.
These resources are available to help streamline the inspection process, making it quicker, so please check in with them before entering the water and help us prevent invasive Quagga, Zebra, and Golden Mussels from getting into our beautiful lake.
They don't live here, we don't want them, we don't need them.
For More Information check out the Water Resources Website at
https://www.lakecountyca.gov/1248/Invasive-Mussel-Prevention

Attention Boaters,Be Advised: All Vessels entering Clearlake must be inspected with or without a Quagga Mussel sticker, ...
05/11/2026

Attention Boaters,
Be Advised: All Vessels entering Clearlake must be inspected with or without a Quagga Mussel sticker, NO EXCEPTIONS. Our Mussel dogs and ramp monitors are here to provide inspections/decontaminations, ramp monitors are present 7 days a week, the mussel dogs will be present May 13-May 15th at Redbud Park (14655 Lakeshore Dr, Clearlake, CA 95422) this week for the Catfish tournament in Clearlake Oaks, with another team of mussel dogs actively inspecting vessels at Library Park (200 Park St. Lakeport, CA 95453) May 15th-May 16th for the Big Bass Tournament. Mussel inspection canine schedule is as follows:

Redbud:
May 13th- 7 am-1 pm (7 hours)
May 14th- 11 am-11 pm (12 Hours)
May 15th- 6 am - 12 pm (7 Hours)

Library Park:
May 15th- 6 am - 1pm (8 Hours)
May 16th- 5 am - 12pm (8 Hours)

Inspection Process Explained-
Inspector/ Ramp Monitor will conduct a thorough inspection (visually looking for Mussels, feeling for settlers and looking/listening for standing water), including but not limited to:
-Bilge pumps
-Motors
-Live wells
-Bait wells
-Ballast tanks
-Bladders
-All areas of standing water
Mussel dogs will be guided by their handler around the vessel specifically in areas where standing or unverifiable water would be. If the mussel dog inspection is passed, the boater will receive a yellow slip verifying that they were properly inspected and are deemed safe to enter Clearlake.
These resources are available to help streamline the inspection process, so please check in with them before entering the water and help us prevent invasive Quagga, Zebra, and Golden Mussels from getting into our beautiful lake.
They don't live here, we don't want them, we don't need them.

For More Information check out the Water Resources Website at
https://www.lakecountyca.gov/1248/Invasive-Mussel-Prevention

Lake County Sponsored Phosphorus Mitigation Demonstration on Clear Lake Starts April 13th Lake County is sponsoring a de...
04/07/2026

Lake County Sponsored Phosphorus Mitigation Demonstration on Clear Lake Starts April 13th

Lake County is sponsoring a demonstration project led by EutroPHIX and approved by the Clear Lake Blue Ribbon Committee. Excess phosphorus is a key driver of harmful algal blooms in Clear Lake. This project will implement a phosphorus mitigation demonstration in the Upper Arm of Clear Lake.

From April 13–24, EutroPHIX will apply EutroSORB® G, a safe and effective phosphorus-binding treatment, to lake sediments within a 400-acre treatment area located about 2 miles offshore. This project will not affect lake uses such as boating, fishing, or drinking water. It is an important step in building the foundation for future large-scale rehabilitation efforts in Clear Lake. By reducing the release of phosphorus from sediments into the water, the project is expected to mitigate up to 14,500 pounds of phosphorus over time. Reducing phosphorus helps limit harmful algal blooms and supports healthier, more usable water for the community.

Work will be based out of Lucerne Harbor Park from April 13–24. During that time, a portion of the parking lot and half of the boat launch will be reserved for project operations. Closed areas will be clearly marked, and the rest of the park and boat launch will remain open to the public, though parking will be limited until work is complete. If the project finishes before April 24, all parking restrictions will be lifted early.

Multiple application boats will travel between Lucerne Harbor Park and the offshore treatment area several times each day. Please give contractors space on the water as they carry out this work safely and efficiently.

A map of temporary closure areas is provided below.

For more information, please contact Lake County Water Resources at 707-263-2344, or [email protected]

Vimeo link (downloadable):
https://vimeo.com/1180936488/69a23adb1f?fl=ip&fe=ec

Friendly reminder to all boaters, if you're planning to launch make sure your vessel is inspected and has an up-to-date ...
04/02/2026

Friendly reminder to all boaters, if you're planning to launch make sure your vessel is inspected and has an up-to-date mussel sticker. Our screening locations listed below are open and ready to assist you. Visit one of our screening locations before heading out to the lake.

Address

255 N. Forbes Street
Lakeport, CA
95453

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 8am - 5pm

Telephone

+17072632344

Website

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