El Dorado County, CA Stormwater Program

El Dorado County, CA Stormwater Program El Dorado County Stormwater Program Stormwater Hotline (530) 573-7906 924B Emerald Bay Rd South Lake Tahoe, CA 96150 (530) 573-7924
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Tahoe Resource Conservation District
06/21/2019

Tahoe Resource Conservation District

Tahoe RCD and El Dorado County Roads - Maintenance - Tahoe Division staff simulated a rain event on Elk’s Club Drive using over 6000 gallons of water applied by a water truck in a cutting edge science experiment testing potential sediment load reductions by simply repaving road surfaces.

A similar simulation was conducted prior to Elk’s Club Drive being repaved last fall.

We anticipate a reduction in sediment now that the road is in great condition. If repaving crumbling roads leads to reduction in sediment during storm events it could help justify paving roads as water quality BMP. A win-win for the public and the lake.

Urgent Message - El Dorado County Tahoe Basin and High Elevation Residents (6000'-7500’)The weather forecast is now anti...
02/12/2019
National Weather Service Text Product Display

Urgent Message - El Dorado County Tahoe Basin and High Elevation Residents (6000'-7500’)

The weather forecast is now anticipating several inches of rain at Lake level. The County is urging anyone with historic drainage issues or those concerned about localized flooding to clear snow from storm drains near their house prior to the onset of this storm.

County maintenance staff are actively working to clear streets of snow, however it is unlikely that all storm drain inlets can be cleared prior to this next storm series.

The time to act on clearing snow around properties is now and the window is closing quickly. Please see the link below to the NOAA forecast discussion and be prepared for excessive rain.

https://forecast.weather.gov/product.php?site=REV&issuedby=REV&product=AFD&format=CI&version=1&glossary=1

Why the Picture of a pothole in the Shape of Lake Tahoe? Pavement Wear and Water QualityProbably the largest issue that ...
12/07/2018
The Impact of Pavement Degradation on Stormwater Runoff from Local Roads. Emerging Science of Pavement as a Best Management Practice? | CASQA - California Stormwater Quality Association

Why the Picture of a pothole in the Shape of Lake Tahoe?

Pavement Wear and Water Quality

Probably the largest issue that the public sees daily yet not given the attention it deserves with regard to water quality / Lake Tahoe clarity. The County is working with the TRCD, UC Davis and Texas Southern University and has measured the sources of fine sediment (those responsible for Tahoe clarity loss) in stormwater runoff. During the course of the first part of this study data indicated that pavement wear alone accounted for up to 53% of the total fine sediment load in stormwater runoff.

And Why is this a big deal? Because if pavement wear is this large of source of clarity degrading sediments, then by improving the pavement condition we can reduce the loading at the end of pipe thereby improving clarity. Also by improving the pavement condition we can make the road more durable and less susceptible to erosive forces of heavy equipment and chain wear during winter operations. Last, having a good pavement condition makes street sweeping more effective at recovering pollutants and sediment from the road.

In this regard, “good” pavement condition is a BMP and a lake clarity solution. The investment needed to improve road condition County wide is daunting but hopefully having / collecting data will help to justify this expense.

The County along with the TRCD has been measuring the sources of fine sediment on Elks Club Blvd. Data has been collected pre and post paving. This last summer the County improved Elks Club and is working with the TRCD and the Regional Stormwater Monitoring Program to measure the affects / load reductions from improving the pavement condition and its effect on stormwater runoff. This could be a win for the taxpayers and the lake. The theme for this is “Paving the Road to Clarity”. This is also the only data ever collect on this topic ever in which the County and its partners are pioneering scientific / environmental engineering concepts.

There is lots to discuss and much information on this topic. Contact Russell Wigart at the stormwater division if you have questions.

Abstract from initial study - https://www.casqa.org/asca/impact-pavement-degradation-stormwater-runoff-local-roads-emerging-science-pavement-best

The Tahoe Stormwater Team (Engineering, Planning, and Maintenance Divisions) had quite the successful year in 2018. Over the next couple weeks accomplishments will be highlighted on social media with a brief summary of those successes.

Transportation infrastructure is the life blood of sustaining the economy and is critical for the success of local and state governments. With the financial liabilities of roads becoming increasingly overwhelming, governments are struggling to maintain infrastructure and comply with the increasing r...

02/16/2018

The County is applying brine today as a proactive measure for the weekend holiday traffic. Pre application of brine can stay active for many days so with the coming holiday weekend and the potential for snow and imminent cold weather the County implemented its brine pretreatment program. Using brine assists the County with longer term ice control which ultimately means clearer roads, less plow activity, less sand with rock salt, and less disruption to the road surface. This was the decision of the maintenance division in order to protect the public. These decisions require human judgement and are dependent upon accurate forecasts and responsible implementation which the County does it best to achieve in the publics best interest.

01/24/2018

The County is doing its best to be responsible with Brine operations. We have computer controlled distribution that can monitor and apply only where needed at a controlled rate. Dont confuse County brine operations with Cal Trans use of brine. We have already contacted them to see whats going on with their current operations..

We have free Radon Test Kits available to those that would like to test their home.  924B Emerald bay Rd.   Radon an odo...
01/18/2018

We have free Radon Test Kits available to those that would like to test their home. 924B Emerald bay Rd. Radon an odorless gas is one of the largest silent killers in our Country with Tahoe having some of the highest concentrations in the nation.

01/10/2018

The County is applying brine this morning due to black ice and flash freezing. We had many calls from CHP / Sheriff so we are implementing this for safety of the travelling public. This is a great cost effective tool in the County winter operations toolbox.

Brine is a 23.5% salt 76.5% water mixture that goes on the road wet and can be used as both an anti-icer (prevents ice) and deicer (melts ice). This is a proven nationwide method for combating ice and improving public safety while using much less chlorides giving it a large benefit to vehicular safety and also less damage to the environment.

If you have question or concerns please call the stormwater team at 530 573 7906

The Angora meteorological station located on Boulder Mountain South Lake Tahoe has recorded since October 1st 57.2” inch...
03/02/2017

The Angora meteorological station located on Boulder Mountain South Lake Tahoe has recorded since October 1st 57.2” inches of precipitation as of today! There is still 7 months left in the water year! The Jan-Feb precipitation for 2017 was 38.5 inches! This has been an impressive winter to say the least.

Lake Tahoe water level is up approximately 4 feet since last summer standing today at 6226.66 feet (and rising).   The l...
02/22/2017

Lake Tahoe water level is up approximately 4 feet since last summer standing today at 6226.66 feet (and rising). The lakes maximum legal limit is 6229.1 feet. Each inch of lake level amounts to approximately 3.5 billion gallons of water. With approximately 48 inches of rise this equals approximately 165 billion gallons of water or close to the total annual water usage of Los Angeles every year. The lake will be full with an additional level increase of 2.4 feet. Last spring the lake level increased nearly 1.8 feet from spring runoff and this year the snowpack is much greater. The Department of Water resource estimates show that the current snowpack in our area is approximately 200% of normal and even if the tap shuts off and we receive no more precipitation until April, we end up 157% of average. So it appears this means that the lake will fill up and the drought is busted. With sore backs and busted roads, other than skiing powder, I think many of us wouldn’t mind if natures tap shut off for a few.

El Dorado County stormwater program has a limited number of free radon test kits available for California residents..
02/21/2017
Radon Awareness Event at TRPA Rescheduled to March 2

El Dorado County stormwater program has a limited number of free radon test kits available for California residents..

The University of Nevada Cooperative Extension’s Radon Education Program is offering free radon test kits and an educational presentation about radon at 6 p.m. Thursday, March 2 at the Tahoe Regional Planning Agency (TRPA) offices in Stateline, 128 Market Street.

El Dorado County Roads - Maintenance - Tahoe Division
01/09/2017

El Dorado County Roads - Maintenance - Tahoe Division

A few pictures of the flooding that's occurring at the Angora Curve and near Sawmill, both on Lake Tahoe Blvd. Please avoid these areas.

El Dorado County started the movement on this change of sand type..   Using native sands does make more sense than using...
01/13/2016

El Dorado County started the movement on this change of sand type.. Using native sands does make more sense than using other imported materials. Preventing the fine sediment (those responsible for Lake Tahoe clarity loss) from getting in contact with the road in the first place is called source control. This sand is one source that is much easier to control though after a storm it still needs to be recovered via street sweepers.

Did you know the road sands used to provide safe traction for drivers during winter storms are the largest source of fine sediment that harms Lake clarity? But there are solutions! Read more: http://ow.ly/WVojh

Russell Wigart and Brendan Ferry from the El Dorado County stormwater program along with staff from the City of South La...
11/19/2015

Russell Wigart and Brendan Ferry from the El Dorado County stormwater program along with staff from the City of South Lake Tahoe and the League to Save Lake Tahoe had the great opportunity to spend a day with some of the finest young adults from the South Tahoe High School AP Science Classes. The day was spent touring many stormwater projects and having productive discussions on water quality, Lake Clarity, environmental and natural resource issues. These kids are the future and it’s great to see and inspire such talented and intellectual young adults.

Tahoe Hills Water Quality Improvement Project Helps Save Lake Tahoe ClarityCompleted in October 2015, the Tahoe Hills Wa...
11/06/2015

Tahoe Hills Water Quality Improvement Project Helps Save Lake Tahoe Clarity

Completed in October 2015, the Tahoe Hills Water Quality Improvement Project located on the western shoreline of Lake Tahoe will prevent thousands of pounds of ultrafine sediment (16 micron) from being transported to Lake Tahoe every year. The pipe in the picture below directly discharged large volumes of polluted runoff directly to Lake Tahoe and became a highlight and foundation for the beginnings of the Pipe Keeper program, which helped fuel the need for additional stormwater data collection. Data collected by local citizen scientists and the County helped to identify this as a high priority outfall and a key component of the County Of El Dorado stormwater program. High resolution monitoring data was later collected to understand pollutant transport and has become a critical demonstration project for sediment load analysis and runoff model comparison / calibration. The project used stormwater runoff control as the primary treatment through infiltration of water into the ground and restoration of the hydrologic cycle. Basically let water soak into the ground through engineered features and let nature do the work…. This was accomplished by cost effectively using a series of stormwater ponds, articulated infiltrating channels, sub-surface infiltration galleries and source control of eroding hill slopes and drainages.

It is great to see this important Lake Saving project implemented. Now instead of seeing disgusting stormwater runoff going straight to the lake we now have a dry pipe and hopefully a clearer lake.

Contractor – Thomas Haen Company
Design – County Of El Dorado Engineering and Long Range Planning Divisions

Keep Tahoe Blue
10/15/2015

Keep Tahoe Blue

Over 65 participants in the North Shore and South Shore community gatherings learned from expert presentations and Q&A panels. This included how runoff from big storms can convey pollution to Lake Tahoe, what Tahoe's communities are doing to address stormwater pollution and how to get involved in the League's Pipe Keepers program to investigate the stormwater impacts in their own neighborhood.

A big thank you to the organizations that helped make the events possible: Tahoe City Public Utility District, Placer County Public Works Department, UC Davis Tahoe Environmental Research Center, El Dorado County, CA Stormwater Program, Official City of South Lake Tahoe Stormwater program, Tahoe Regional Planning Agency and the Desert Research Institute. We also would like to thank all those that attended, including our awesome Pipe Keeper volunteers.

Learn about how you can help combat fine sediment and nutrient runoff and how to get involved in our Pipe Keeper program: https://keeptahoeblue.org/our-work/pollution/

Russell Wigart of the County of El Dorado presented a couple research projects at the recent Tahoe Science Conference at...
10/05/2015

Russell Wigart of the County of El Dorado presented a couple research projects at the recent Tahoe Science Conference at University Nevada Reno. The County has pioneered the use of new native sands for traction on icy roads to improve safety of the travelling public. The information and concepts attached are ones the County believes will be the largest contributors to the Restoration of Lake Tahoes famed clarity.

Golden Bear Water Quality Improvement ProjectLike our County Stormwater Page on Facebook!!!The County Of El Dorado recen...
06/15/2015

Golden Bear Water Quality Improvement Project

Like our County Stormwater Page on Facebook!!!

The County Of El Dorado recently constructed this simple project to mitigate stormwater runoff impacts to Trout Creek and assist with the clarity improvement objectives of Lake Tahoe. This site has been monitored both by the County Of El Dorado and the Pipe Keepers program with the League to Save Lake Tahoe. The data showed this pipe to have elevated contributions of fine sediment during every storm and was identified as a connected outfall, meaning that every time it rained, polluted runoff made its way to the creek. To solve this problem the County used the concept of hydrologic disconnection by reducing the volume of runoff through the simple concept of infiltration (soaking water into the ground). Water quality monitoring data was used to estimate the volume of runoff needing capture and the potential sediment load for required maintenance. The end result was the near elimination of runoff and a dry pipe. The County used the California Conservation Corp along with County Road Crew to remove a portion of the pipe at the creek and build a berm near the floodplain to allow for additional percolation and water spreading.

The end result was project that disconnected urban runoff from the creek, which has directly benefited Trout Creek and the clarity of Lake Tahoe.

Funders - California Tahoe Conservancy and the United States Forest Service.
Designers - County Of El Dorado Tahoe Engineering Unit
Contractors – Thomas Haen with support from CCC and County Road Crew

05/04/2015
Tahoe Keys Dredge 2015

Tahoe Keys Dredging.... For anyone interested... WOW

http://youtu.be/k7HE3gyslNo

Take an arial tour of the Tahoe Keys Dredging Project currently underway... Pacific Built Contracting was awarded this contract because they are the very bes...

Rivers are truly dynamic and resilient....   A river is not meant to be fixed....   Thoughts on this anyone?
05/04/2015
Rivers Recover Rapidly Once Dams Are Gone, Study Finds

Rivers are truly dynamic and resilient.... A river is not meant to be fixed.... Thoughts on this anyone?

A new study sums up what scientists now know about the environmental effects of removing dams from rivers. It concludes that rivers and fish respond quickly after a dam is removed, and the results are mostly positive.

Address

924 Emerald Bay Rd
South Lake Tahoe, CA
96150

Opening Hours

Monday 08:00 - 17:00
Tuesday 08:00 - 17:00
Wednesday 08:00 - 17:00
Thursday 08:00 - 17:00
Friday 08:00 - 17:00

Telephone

(530) 573-7900

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Comments

Hey Guys, Thanks so much for endorsing laying brine water down again for a forecast of 1 to 3 inches of maybe snow on North Upper Truckee Road for Thanksgiving ...... it serves no purpose other than ruining locals' vehicles
For the first time ever today I noticed our road crews only applied brine on a few corners that needed it - rather than soaking the entire stretch of North Upper Truckee Road . If this is a new program adjustment I cheerfully applaud it - Thank you !
Today is Saturday and it is 4pm and once again your road crews have spread brine water on North Upper Truckee Road when absolutely NO SNOW STORM PREDICTED UNTIL AT LEAST TUESDAY NEXT WEEK !!! What the heck is wrong with you people ? Why are you destroying our vehicles for no reason again ? Why do you keep doing this ?????
Please get this message to the road maintenance dept - This Road Maintenance Dept is again unnecessarily spreading Brine solution on our side streets when there are absolutely no storms predicted and the roads are dry. This is ruining our vehicles and causing many hundreds of thousands of dollars of damage for no reason