Tahoe Resource Conservation District

News & Updates

Could Repaving Roads Be a Water Quality BMP?

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In partnership with El Dorado County and Texas Southern University, the Tahoe Resource Conservation District (Tahoe RCD) is monitoring stormwater runoff from Elk’s Club Drive to quantify the amount of fine sediment that comes from the road itself. Samples are taken of the runoff water and sent to the laboratory for source apportionment analysis. This lab test uses molecular markers to determine what portion of the fine sediment in the runoff comes from native soil (road shoulder erosion), traction abrasives (road sand), and asphalt (the road itself). 

Elks Club road cracked with potholes

Elks Club road cracked with potholes.

Currently, Elk’s Club Drive is in poor condition. It is covered in cracks and potholes. Not only is a degraded road bad for public safety, it is difficult to recover road sand and other material through road sweeping. Road sediment is a large portion of the fine sediment that ends up in Lake Tahoe, reducing its famed clarity. Early results show that up to 30% of this fine sediment includes asphalt (aggregate and binder). El Dorado County will be repaving Elk’s Club Drive this summer. After it is repaved, the Tahoe RCD will continue to monitor the runoff from the road for an additional year. If data shows that repaving roads contributes to improved water quality (less sediment), then improved pavement condition could be recognized as a water quality Best Management Practice (BMP). This would not only be identified for garnering credits for the Lake Tahoe TMDL Clarity Crediting Program (https://clarity.laketahoeinfo.org/), but also potentially opening up water quality improvement funds for road maintenance. New roads would be beneficial for public safety, vehicle maintenance costs, aesthetic appeal, driving pleasure, road maintenance and sweeping operations, long term durability, snow removal operations, stormwater quality, and lake clarity. 

Runoff flowing over road surface.

Runoff flowing over road surface.

 

Measuring the runoff flow and volume.

Measuring the runoff flow and volume, and collecting water samples to take back to the laboratory for further analysis.

A washoff simulation was conducted in April to analyze runoff under controlled conditions. Over 5,000 gallons of water were released on Elk’s Club Drive and sampled at the terminal location. In a rainstorm, water runs off the road shoulder contributing native soil in runoff. In a snowstorm, there is likely to be high concentrations of road sand on the road and in runoff. The controlled simulation excluded native soil and road sand from the procedure, and focused runoff on the road surface only.  Early results show peak turbidities (cloudiness) occurring with peak flows, indicating that sediment is being continually supplied by the road and suggesting that the road itself is eroding. The sediment in the samples will be subjected to the source apportionment analysis to confirm if this hypothesis is correct. Though the data is not yet in, the Tahoe RCD and El Dorado County are hopeful that, in the future, investments in new roads will be viewed as a win-win for the community and the lake.

Early results show cloudiness of water (measured in NTU) coincides with the runoff flow peaks.

Early results show cloudiness of water (measured in NTU) coincides with the runoff flow peaks.

The Fourth of July boat inspections at Lake Tahoe

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Press Release_2018

The Fourth of July holiday and fireworks celebration brings a welcomed influx of boaters to the Lake Tahoe Basin. With sunny skies and warm temperatures predicted, boaters are urged to Clean, Drain, and Dry their boats before arriving at Lake Tahoe inspection stations to avoid delays and decontamination fees. As a reminder, all stations close at 5:30 p.m., so please plan accordingly.

Every motorized boat is required to be inspected for aquatic invasive species prior to launching in Lake Tahoe. Since May, inspectors have intercepted and decontaminated four boats containing invasive quagga mussels bound for the waters of Lake Tahoe. Without natural predators, invasive species pose serious threats to the ecology, recreation, and local economies of the Lake Tahoe Basin.

Watercraft are one of the primary transporters of aquatic invasive species, and the inspection program is critical to preventing their introduction into Lake Tahoe and surrounding waterbodies. A new invasive species infestation in Lake Tahoe could have devastating impacts. Invasive species multiply quickly and can colonize all underwater objects, including docks, water pipes, filtration systems, piers, ramps, and boats. They destroy fish habitat, impair boat engines, and negatively impact water quality and recreation.

“Our boat inspectors have already found four vessels with invasive quagga mussels this season, which is a reminder of just how important the inspection process is to protect our blue waters,” said Chris Kilian, aquatic invasive species program manager with the Tahoe Resource Conservation District. “Over the busy holiday period we see the majority of our season’s boating traffic. After 10 years of fighting aquatic invasive species, we know that the best way to prepare is to arrive clean, drained, and dry to help save you time and money.”

Quick tips for boaters visiting the Lake Tahoe Basin this summer:

  • Visit TahoeBoatInspections.com or call 888-824-6267 for inspection locations, hours, fees, and information about boat inspections and invasive species.
  • Weekdays and mornings are typically less congested at roadside boat inspection stations. Friday evenings, Saturdays, and holidays are typically the busiest.
  • Prior to arriving, make sure your vessel is clean, drained, and dry.
  • Returning Tahoe boats with a Lake Tahoe wire seal still affixed to the boat and trailer may head directly to a launch ramp to purchase a 2018 Tahoe Only inspection sticker.
  • Check that all systems are working, batteries are charged, the boat has gas in the tank, and that you have the key to start the engine. Bring any specialized flushing adapters to the inspection station, as inspectors only have the most common types and sizes.
  • If flushing your engine at home prior to inspection, make sure to drain all residual water. If inspectors find water on your boat they are required to decontaminate.
  • Pull your drain plug. Nevada state law and local ordinance require bilge plugs be pulled while transporting a vessel on public roads.
  • Annual watercraft inspection fees range from $35 for personal watercraft and vessels under 17 feet up to $121 for vessels over 39 feet. An additional fee of $35 is charged for any boat requiring decontamination, with an additional $10 fee for ballast systems. Fees are payable via Visa or MasterCard (no cash or check).
  • Paddlers of kayaks, canoes and other non-motorized watercraft are encouraged to stop by an inspection station for a free inspection. Visit TahoeKeepers.org to learn how to self-inspect boats and gear and receive a free Tahoe Keepers sticker.

Take 3 Steps Closer to Fun by Arriving at Lake Tahoe Inspection Stations with your boat Clean, Drained, and Dry.

Lake Tahoe Roadside Boat Inspection Stations Open for Season

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Roadside stations for inspections and decontaminations of motorized boats and watercraft are officially opening for the 2018 boating season.

Locations, hours of operation, and opening dates are as follows:

Opening Tuesday, May 1:

8:30 a.m. to 5:30 p.m., 7 days a week

  • Meyers: at the junction of US Highway 50 and Highway 89
  • Spooner Summit: at the junction of US Highway 50 and Highway 28 in Nevada
  • Alpine Meadows: Highway 89, off Alpine Meadows Road north of Tahoe City

Opening Thursday, May 17:

8:30 a.m. to 5:30 p.m., 7 days a week

  • Truckee-Tahoe: Highway 267, off Truckee Airport Road

 This year, we are celebrating the success of fighting aquatic invasive species (AIS) for the past 10 years. A huge part of this success is due to the boat inspection program that has allowed us to prevent new species from entering Lake Tahoe. “The fact that we are entering our 10th season with no new invasions, proves that boat inspections are doing what they are intended to do—protect Lake Tahoe,” said Dennis Zabaglo, Tahoe Regional Planning Agency’s aquatic resources program manager. “The Tahoe RCD boat inspectors have allowed us to be ready for any invasive species that could potentially enter the lake.”

 All motorized watercraft require an inspection for AIS prior to launching into Lake Tahoe, Fallen Leaf Lake, Echo Lake, and Donner Lake. Invasive species, such as quagga mussels, New Zealand mudsnails, and hydrilla, are known to multiply quickly and colonize underwater surfaces, including docks and piers, water supply and filtration systems, buoys, moored boats, and even the beautiful rocky shoreline. They destroy fish habitat, ruin boat engines, and can negatively impact water quality and the local economy, recreation, and ecosystem. Boats and other watercraft are the largest transporters of AIS, and the inspection program is critical to preventing their spread into Lake Tahoe and other waterbodies. Knowingly transporting AIS into Lake Tahoe is against the law, and violators may be subject to monetary penalties.

 Since 2008, Tahoe RCD inspectors have performed over  70,000 vessel inspections and decontaminated 32,576 of them using hot water. Throughout the past 10 seasons inspectors have found hundreds of  vessels containing foreign species such as mussels, snails and plant material. “Boaters are encouraged to visit the website or call the hotline to learn how to Clean, Drain, and Dry their boats prior to arriving at inspection stations,” according to Chris Kilian, AIS program manager for the Tahoe Resource Conservation District, “save time and money by making sure to drain all water from the intake systems, clean out your vessel, and make sure it is dry. Taking these three simple steps will get you on the water faster.”

 Annual watercraft inspection fees remain unchanged from last year. The “Tahoe In & Out” inspection ranges from $35 for personal watercraft and vessels under 17 feet and up to $121 for vessels over 39 feet.  The “Tahoe Only” inspection sticker is $30. If your vessel is not Clean, Drain, and Dry, decontaminations are available for $35. There is an additional $10 fee for the decontamination of ballast tanks or bags. 

 Invasive species are highly opportunistic and can be transported by non-motorized water recreation equipment as well. The Tahoe Keeper program was created to inform the paddling community about the importance of inspecting equipment, including: kayaks, paddleboards, fishing equipment, inflatable water toys, and life jackets. For more information visit TahoeBoatInspections.com/tahoe-keepers.

About the Lake Tahoe Watercraft Inspection Program

The Watercraft Inspection Program is part of the Lake Tahoe Aquatic Invasive Species Program which is implemented by 40 public and private partner organizations including federal, state and local jurisdictions, research partners, public utility districts, and private marinas.  The state, federal and local agencies comprising the Lake Tahoe Aquatic Invasive Species Coordinating Committee have provided leadership, direction and resources to fulfill this program’s mission of prevention, detection and control of aquatic invasive species in the Lake Tahoe Region.  Learn more about the watercraft inspection program and AIS information by visiting TahoeBoatInspections.com or calling (888) 824-6267.


The 2017 Tahoe RCD Annual Report is Here

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2017 was a big year for our programs and projects at Tahoe Resource Conservation District, view the report below to see all our work.

2017_Annual_Report

JPA crew

Tahoe RCD to Hold Community Meeting for Input on Stormwater Resources Plan

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Public Information Meeting

The Tahoe RCD, along with agency partners, is developing a Stormwater Resource Plan (SRP). The SRP is required by the California State Water Resources Control Board to establish eligibility for bond funding for stormwater quality improvement projects. It quantifies the multiple benefits of planned stormwater projects and prioritizes them for funding.

Tahoe RCD is hosting two public meetings to introduce the concept of an SRP, present highlights of the draft SRP, and allow an opportunity for public participation.

 

The meetings will be held at the following times and locations:

December 6th, 2017 at 4 pm – City of South Lake Tahoe Council Chamber

December 7th, 2017 at 9 am – Town of Truckee East Wing Conference Room

Tahoe RCD Logo