Tahoe Resource Conservation District

Storm Water Monitoring

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

 

Tahoma Site Photo 5

Tahoe Stormwater Data Live on Web

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The Tahoe Resource Conservation District (Tahoe RCD) is pleased to announce the launch of a new interactive Monitoring Dashboard on Tahoe Regional Planning Agency’s (TRPA) Lake Tahoe (LT) Info website. This pubic-facing portal allows users to browse stormwater monitoring sites and displays summarized stormwater runoff data from around the Tahoe Basin. Sitka Technology Group out of Portland, Oregon is the principal developer of LT Info.

The intent of LT Info is to improve and streamline environmental and community decision-making and build public awareness of environmental and socio-economic conditions in the Lake Tahoe Basin. The first phase of LT Info development included the Environmental Improvement Program Tracker, the Parcel Tracker, and the Sustainability Dashboard. As the LT Info website matured with the refinement of these original applications, more environmental managers were excited to showcase their programs on LT Info.

The next application to be developed was Stormwater Tools, which allows local jurisdictions to report on their progress towards meeting Total Maximum Daily Load credits. The inclusion of Stormwater Tools prompted Andrea Buxton, Stormwater Program Manager at the Tahoe RCD, to contact the TRPA to be included in the development of the website. Tahoe RCD, in collaboration with local jurisdictions, scientists, and stormwater regulators, developed the Lake Tahoe Regional Stormwater Monitoring Program (RSWMP). RSWMP collects stormwater runoff data at eleven long-term monitoring stations around Lake Tahoe. The objective is to be able to measure improvement in stormwater quality over time as more environmental improvement projects are implemented in urban areas.

“The LT Info platform provided the ideal opportunity for us to showcase the results of the stormwater runoff monitoring we have been doing over the last four years. We want RSWMP data to be easily accessible to the local jurisdictions, the regulators, and the general public so that the positive effects of all the time and money spent on environmental improvement can be recognized” says Buxton.

By linking LT Info directly to the recently completed RSWMP Data Management System, developed by Geosyntec Consultants in Portland, Oregon and the Desert Research Institute in Reno, Nevada, with a seamless system-to-system connection, LT Info became a platform to display complicated stormwater monitoring data in easy to interpret formats for everyone from stormwater program managers,to regulators, project funders, and the general public, to use for their unique and individual purposes.

RSWMP is the first monitoring program to be incorporated into the Monitoring Dashboard. The TRPA is anticipating that the Monitoring Dashboard will include many other monitoring programs in the future. This will deepen the integration of various environmental monitoring and tracking programs around the Lake Tahoe Basin and increase the value of the data for decision makers.

“We are really excited about how much potential the Monitoring Dashboard has to connect actions to outcomes through the platform” says Jeanne McNamara, LT Info Platform Coordinator at the TRPA.
Please visit https://monitoring.laketahoeinfo.org/RSWMP to browse the beautiful displays and gain a better understanding of what managers are doing to work toward achieving Lake Clarity goals.

Tahoe RCD Records Largest Stormwater Flows at Monitoring Sites

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SW Press ReleaseThe early storm event that began on January 7 with over 5 inches of rain in some regions of the Lake Tahoe Basin before turning to snow, delivered a massive amount of runoff to the Lake in a short period of time. During this storm event the Tahoe RCD Stormwater Monitoring Program measured the highest flows ever recorded at all eight monitoring locations since monitoring began in 2013.  Our Tahoe Valley site, located off Tahoe Keys Blvd, measured 1.5 million cubic feet of flow, nearly 90% of the flow that was observed throughout the whole 2016 water year! 

The Tahoe RCD monitors urban stormwater runoff around the Lake Tahoe Basin, providing the science that helps guide stormwater managers in environmental improvement project design and informs them if projects and management strategies have been successful in reducing pollutant loading to Lake Tahoe.  Each stormwater sample is analyzed for fine sediment particles (FSP), nitrogen, and phosphorus to estimate nutrient and sediment loading from urban stormwater runoff. This last storm produced over 18 million gallons of runoff just from the sites we monitor alone. All data collected throughout a “water year”, October to September, is compiled into an annual monitoring report, given to stormwater managers and posted on the Tahoe RCD website. With successful implementation of environmental improvement projects that promote infiltration of runoff before it gets discharged to the lake, we have had the pleasure of retiring two of our urban stormwater monitoring sites as we saw significant reductions in pollutant loading from these locations.

The Stormwater Monitoring Program is continuously looking for ways to improve stormwater monitoring efforts.  New for the 2017 monitoring season, the majority of our sites were outfitted with remote monitoring equipment, allowing us to monitor these sites with smartphones.  The new remotely accessible equipment effectively allows our team to view what is happening at our monitoring sites in real time, and determine the best way to manage each individual site during storm events. Our scientific monitoring team is deployed in the most inclement of weather, because good science doesn’t take a break. The severity of this recent storm brought downed trees, dangerous road conditions, and a wealth of water.  However, with these remote monitoring systems in place, our team was able to monitor all of our sites without making extensive trips into the field from the safety and comfort of our homes. This new remote technology allows for more reliable data management and easier data reporting.

Discover our monitoring locations or view our 2016 Annual Monitoring Report. Follow us on facebook.com/tahoercd to stay up to date on our monitoring activities.

Tahoe RCD: What is Stormwater?

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What is stormwater runoff you ask? Here is a video put together by Dylan Eichenberg for our Stormwater Symposium held on December 10 that discusses what stormwater runoff is and also where it goes after it leaves your property. 

Picture of Retaining walls

Frequently Asked Questions: BMPs

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What is the Environmental Improvement Program?

The Environmental Improvement (EIP) Program is a comprehensive restoration program launched in 1997 as a private and public partnership launched after the 1997 Lake Tahoe Presidential Forum to protect and improve Lake Tahoe Basin’s natural and recreational resources. Hundreds of EIP projects are completed each year focusing on improving air, water, and scenic quality, forest health, fish and wildlife, and public access to the Lake and other recreation areas to improve the environment.  Many are water quality improvement and erosion control projects which incorporate stormwater Best Management Practices (BMPs) implemented by the City, the Counties and state highways to reduce urban stormwater runoff to improve Lake clarity and near-shore conditions.

What is Urban Stormwater Runoff?

During rain storms and other precipitation events, hard surfaces such as roadways, concrete and rooftops carry stormwater to nearby storm drains and rivers that lead to Lake Tahoe instead of allowing the water to percolate through the soil. This natural filtering process is important for protecting Lake Tahoe’s clarity. The sediment and associated nutrients in stormwater runoff also feed algae and aquatic invasive species which negatively affect water quality, habitat, and aesthetic and recreation opportunities.

Do I still need to do my BMPs?

Yes. All private and public property owners in the Basin are required to install and maintain water quality Best Management Practices (BMPs) on developed properties. BMPs are proven methods that prevent sediment and nutrients from entering our waters, can help slow or reverse the loss of Lake clarity and improve near shore conditions. The push for program participation by the Tahoe Regional Planning Agency may heighten when local stormwater jurisdictions are implementing EIP projects in your neighborhood. These water quality improvement projects collect and treat stormwater from the public roads, and the right-of-way. The public is being asked to do their part as well by installing BMPs that typically include: paving dirt driveways, protecting soil under roof drip lines, stabilizing or retaining steep slopes and loose soil, and vegetating and mulching bare soils, and installing stormwater retention systems which capture stormwater allowing it to soak into the soil instead of runoff the property. 

What is Source Control?

Source control BMPs are measures taken to specifically keep soil from leaving the property.  This approach excludes stormwater infiltration systems such as drywells and infiltration basins when infiltration isn’t feasible due to steep slopes or high groundwater. When these measures are implemented on properties where stormwater infiltration is challenging, the TPRA has issued BMP Source Control Certificates to recognize that the property owner has implemented these basic sediment control measures. In some instances, private property owners have been able to install joint stormwater infiltration systems, due to limitation on one or more individual properties, which have allowed all of the properties to receive TRPA BMP Certificates of Completion.

What is Area-wide Stormwater Treatment?

Area-wide stormwater treatment is a new approach to implementing cost efficient and effective urban stormwater management practices. A handful of these area-wide projects are underway in the Tahoe Basin to ensure capture and treatment of urban stormwater runoff where conditions such as proximity to lake, high ground water, or steep slopes can limit stormwater infiltration.  When these conditions exist, property owners may find that installing and maintaining BMPs on their property is significantly more challenging and costly. Participation in area-wide stormwater projects can offer incentives such as reduced capital outlay costs, joining a public-private partnership to maximize state and local funding and reduced maintenance costs.

What does the CWP program have to do with BMPs?

In order to assist with pollutant load reductions to Lake Tahoe, the Community Watershed Partnership (CWP) Program supports implementation of the Basin’s Environmental Improvement Program (EIP), a cooperative public/private effort to preserve, restore and enhance the environment of the Lake Tahoe Region. Through the development of the CWP Program the Tahoe Resource Conservation District (Tahoe RCD), the Nevada Tahoe Conservation District (NTCD), and the Natural Resources Conservation Services (NRCS) have provided extensive technical assistance and education to private property owners in order to contribute to the reduction of pollutants that effect Lake Tahoe’s unique clarity, beauty and bountiful natural resources for future generations.

Why do I want to practice Lake Friendly Landscaping?

Lake friendly landscaping encourages sustainable practices that protect the region’s natural resources in our own backyards and communities. Lake friendly landscaping encourages property owners to use water, fertilizer and pesticides wisely, and to use native and adapted plants to benefit wildlife habitat while reducing soil erosion and wildfire risk. Through the CWP program, property owners can participate in Lake friendly landscape stewardship practices in a fun and creative way.