The dam and reservoir are the source for the Hetch Hetchy Aqueduct, which Around .4 miles, the trail cuts back to the right and makes its way to the river. Eleanor Dam was constructed in 1918, followed by OShaughnessy Dam, finished in 1924 to create the hotly debated Hetch Hetchy Reservoir. O' Shaughnessy Reservoir Park. Share this graph |. If that time wont work for you, 12:00AM to 12:00AM looks promising. An old photo taken in 1918 of Hetch Hetchy project workers. Lowest 26 January, 2022-5.8 F; Average 2022 38.8 F; Highest 11 May, 2022 82.4 F; Lowest 20 April, 2022 26.6 F; Average April 47.9 F; Highest 23 April, 2022 80.6 F; Lowest 8 May, 2022 Upcountry and the Bay Area. O'Shaughnessy Reservoir is located in Delaware County, Ohio. They are relatively small fisheries (Griggs is 387 acres and OShaughnessy is 912 acres), and both bodies of water get a lot of pressure from bass anglers. Call 209-372-0200 for the latest road and weather conditions, Hetch Hetchy Road Daily Hours: 8 am to 7 pm, (April 1 to April 30) Available data for this site Click to hide station-specific text Funding for this site is provided by: Lake or reservoir water surface elevation above NGVD 1929, feet. Heres how you know Impounded by OShaughnessy Dam, Hetch Hetchy Reservoir water passes through hydroelectric powerhouses before it enters the San Joaquin Pipelines, the Tesla Ultraviolet Treatment Facility, and the Coast Range Tunnel on its journey to the Bay Area. Fishing Opportunities, at OShaughnessy Reservoir include Crappies * Largemouth Bass * Bluegill * Saugeye (stocked) * Northern Pike. Boating Information ~ There are no horsepower restrictions on O`Shaughnessy Reservoir. Offering the best quality O Shaughnessy Reservoir boat rentals, jet ski, waverunners, boat tours and charters, water sports, flyboarding and water toys at this beautiful lake. Monday April 25 th 3:00pm-6:00pm *If you would like to purchase extra keys, please have a check made out to The City of Columbus and these can be purchased at the time of pickup. Add up to 2 more sites and replot for "Temperature, water, degrees Celsius". Maximum depth is over 40 feet near the dam, although much of the water is 20 feet or less. Below are weather averages from 1971 to 2000 according to data gathered from the nearest official weather station. For bluegills, fish shoreline cover throughout the lake with small worms and larval baits suspended beneath a bobber. OShaughnessy supports over 45 species of breeding birds and over 100 species of migrating birds. Alternate Fishing Times: 12:00AM to 12:00AM. This is a small portion of the overall collection from the Chemistry 221 lab. Instream Below are weather averages from 1971 to 2000 according to data gathered from the nearest official weather station. It is located in Delaware County and covers 896 acres. If by chance you have a boat, Bradley Lake Marina is a fine marina. In order to test the cold water samples, the solids in the water first had to be filtered out. The watershed above the OShaughnessy Dam drains 2500 km 2 of west-central Ohio. Teams completed the OShaughnessy Dam in 1923 and the reservoir filled for the first time in May of that year. Weather near O'Shaughnessy Lake Last report from ALGONQUIN PARK, null 57.9km away Temperature: 18C / 64F Wind: Canada . These lakes do not allow motorized boats: Campbell Lakes (Great Parks of Hamilton County) - no sailboats allowed. Visitors will find a number of outdoor recreation opportunities here. WEATHER INFO. 1901 South State Route 134. Lure/Bait: nightcrawler: Length: 1 ft. 4 See this graph on the Monitoring Location Pages. Map Help. O'Shaughnessy Lake (0km) Hybla Lake (3km) Selby Lake (3.7km) Cullin Lake (3.7km) Pope Lake (4.3km) Graphite Lake (4.6km) Ledyard Lake (4.6km) Tim Lake (4.6km) Bartlett Lake (5km) For details, please click here. Frum Water-Data Report OH-05-1 Upcountry and the Bay Area. Historical Weather. Add up to 2 more sites and replot for "Temperature, water, degrees Celsius". Historical Weather. They are prevalent in shallows, where splashing makes their presence obvious. Each time, samples for physical and chemical parameters were collected from three stations on the reservoir and usually from a number of depths at each station (see map, page v). LAKE WATER QUALITY SUMMARY O'Shaughnessy Reservoir was sampled three times during the open-water season of 1973 by means of a pontoon-equipped Huey helicopter. West Branch Showdown - 8/13. The trail is a doubletrack gravel road, which makes for easy hiking. The O'Shaughnessy Dam is located on the Scioto River near Dublin, Ohio, United States.The dam forms O'Shaughnessy Reservoir, which is a major source of drinking water for the city of Columbus.It was completed in 1925 following recommendations of then superintendent Jerry O'Shaughnessy (for whom the dam was named). (937) 383-0031. This lake is 1,330 acres in size. Show More Show Less 2 Lure/Bait: Buy Now Blue Fox Classic Vibrax Spinners: Length: 1 ft. 0 in. O'Shaughnessy Reservoir (near zoo) - O'Shaughnessy Reservoir - Find info about paddling launch sites including directions, ammenities, & fees to plan your next paddling trip! Welcome to the OShaughnessy Reservation System for Overnight Facilities at Hetch Hetchy Reservoir Policy Rental Guidelines Facilities/Rates Directions History. A cap-and-trade policy could speed the process and help pay the bills. Best Fishing Times: 12:00AM to 12:00AM. Most fish are suspended over main lake points and deep water. It was the second tallest dam in the U.S. at the time. Body of Water: O'Shaughnessy Reservoir Coordinates: 40.162073, -83.125808 Get Driving Directions Amenities. A section of the O'shaughnessy Reservoir in Delaware County, Ohio. Some people may know that the backbone of the SFPUC's Regional Water System is the OShaughnessy Dam. Frum Water-Data Report OH-05-1 Temperature, water, degrees Celsius. Will try again next week. O'Shaughnessy Dam (Ohio) - The O'Shaughnessy Dam is located on the Scioto River near Dublin, Ohio, United States. If that time wont work for you, 12:00AM to 12:00AM looks promising. Water Depth: 5 ft. Water release at O`Shaughnessy Dam due to high levels of snow melt at Hetch Hetchy Reservoir in Yosemite National Park; One of. Owned by the city of San Francisco, Hetch Hetchy Reservoir provides water to 2.7 million residents and businesses in the San Francisco Bay Area. 10545 Riverside Dr. Dublin, OH 43065 View on Map. Bait Shops, and Fishing Spots Near Me. Even though there are no signs, park rangers and dam workers will ask you to turn back to prevent you from getting too close to the dam. At the time, the reservoir was described as We took samples along the reservoir maximizing the sample distribution. How to Fix Our Dam Problems. Share this graph |. Available data for this site Click to hide station-specific text Funding for this site is provided by: Lake or reservoir water surface elevation above NGVD 1929, feet. Stump Lake (Punderson State Park) - non-powered sailboats permitted. Weekend Getaway - 7/23. USGS 03220500 O'Shaughnessy Reservoir near Dublin OH. OShaughnessy: Thursday April 14 th 12:00pm-3:00pm. The nearest weather station for both precipitation and temperature measurements is HETCH HET which is approximately 1 miles away and has an elevation of 3,870 feet (248 feet higher than O'Shaughnessy Dam). Elected Officials. Carp start to spawn as soon as water temperatures get above 60F. Create a free account! Wednesday April 20 th 12:00pm-3:00pm. The reservoir is eight miles long and the largest single body of water in Yosemite. O'shaughnessy Reservoir, Delaware County Nearest town: Rathbone Surface water area: 1,330 acres Shorelength: 55 Maximum depth: 55 feet Average depth: 25 feet Source: Scioto River reservoir Accessibility: Concrete ramp midpoint launch on east shore; ramp on south shore of Twin Lakes on west side of reservoir Boating: Unlimited horsepower (no personal watercraft; 40 Extra keys are $5 apiece. Weather near O'Shaughnessy Bay Last report from Dryden Airport, 65.4km away Temperature: 18C / 64F Wind: 8.1km/h South Cloud: lake a large inland body of standing water. Best Fishing Times: 12:00AM to 12:00AM. 1 of 22 Hetch Hetchy Valley in 1917, left, before the construction of OShaughnessy Dam, and in 1933, right, after the area was flooded to create the reservoir. OShaughnessy Dam Instream Flow Evaluation Study Plan 1 1 Introduction Agreements between the City and County of San Francisco and the US Department of Interior (1985 Stipulation, 1987 Stipulation) govern minimum instream flows in the Upper Tuolumne River between O'Shaughnessy Dam and Early Intake (the Hetch Hetchy reach). / 40.15389N 83.12583W / 40.15389; -83.12583 The O'Shaughnessy Dam is located on the Scioto River near Dublin, Ohio, United States. The dam forms O'Shaughnessy Reservoir, which is a major source of drinking water for the city of Columbus. EZWebCenter. During the season I spend a lot of time on both Griggs and OShaughnessy. July 28, 2016. The trail is a doubletrack gravel road, which makes for easy hiking. Printable O Shaughnessy Reservoir fishing map located near Central Ohio showing boat ramp locations along with fishing opportunities. and weather changes. Around .4 miles, the trail cuts back to the right and makes its way to the river. Wilmington Weather Forecast Office. 00010 Temperature, water: 2007-10-01 : 2022-05-25: 00095 Specific cond at 25C: 2007-10-01 : 2022-05-25: 00300 Dissolved oxygen: 2007-10-01 : 2022-05-25: 00400 pH: 2007-10-01 : 2022-05-25 This community park OShaughnessy Reservoir Ohio fishing map and location information: OShaughnessy Reservoir is a Lake in Delaware County, Ohio and can be found on the Shawnee Hills USGS topo map. OShaughnessy Reservoir is located about 9 miles northwest of Columbus in Delaware County. State Route 257 parallels the east side of the reservoir. Access is available along State Route 257 at designated parking lots and boat ramps in the Twin Lakes area, along State Route 257 at Home Road, and in Bellepoint. Ohio River Basin Excluding Project Data By J.P. Mangus and S.R. Rising temperatures will also make it harder to provide cold water for fish. Water temp was 80 degrees and muddy. It is approximately 55 feet deep at its deepest point. O'Shaughnessy Dam is a 430-foot (131 m) high concrete arch-gravity dam in Tuolumne County, California, United States.It impounds the Tuolumne River, forming the Hetch Hetchy Reservoir at the lower end of Hetch Hetchy Valley in Yosemite National Park, about 160 miles (260 km) east of San Francisco. Audubon in Central Ohio since 1913. Because Hetch Hetchy and OShaughnessy Dam are located in a national park, the city collaborates with park staff, as well as with government and university-based scientists who work there. Reservoir volume (taf) 100500 5011,000 1,0013,000 3,000+ Local State Federal State and federal water for other purposes. The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. Ohio River Basin Excluding Project Data By J.P. Mangus and S.R. Susan O`Shaughnessy (PhD) Soil and Water Management Research. The re- Take this easy and short walk to the O'Shaughnessy Dam to catch views of the reservoir and two waterfalls- Tueeulala Fall and Wapama Fall. Preliminary Commercial Site Plans. California is the worlds eighth largest economy and generates 13% of U.S. wealth. water quality analysis. Aerial view over Hong Kong Tai Lam Chung Reservoir under smokey weather. PROVISIONAL DATA SUBJECT TO REVISION. Similarly, dams typically increase nutrient retention in reservoirs. At .5 mile, a road to the dam breaks off to the right. OH-257 parallels the east side of the reservoir. Preliminary Residential Plats. Please use your best judgement when determining where you can fish, and make sure you follow local regulations. Hours: Year-round, but only accessible by car when the Hetch Hetchy Road is open. Including additions made between 1934 and 1938, the dam currently stands 430 feet (131 m) above the bedrock below. USGS 03220510 Scioto R. at O'Shaughnessy Dam near Dublin OH. Bodies of Water near O'Shaughnessy Reservoir . Dublin, OH Weather ~ 43017. Teams completed the OShaughnessy Dam in 1923 and the reservoir filled for the first time in May of that year. Approximately 16 km upstream of Griggs Dam on the Scioto River is the O'Shaughnessy Dam separating the slightly larger O'Shaugh- nessy Reservoir (Figure 1) AddThis. Sewer Water Contractor. As a group we were tasked to analysis the data in the OShaughnessy Reservoir. Water Depth: 5 ft. Visible to: Everyone: Catch Conditions. Mosquito Bite - 6/4. National Weather Service Wilmington Weather Forecast Office 1901 South State Route 134 Wilmington, OH 45177 (937) 383-0031 Ask Questions/Webmaster We headed out to Lake Milton this weekend for the first time. The GPS coordinates for this Lake are 40.1539511 (latitude), -83.1260223 (longitude) and the approximate elevation is 804 feet (245 meters) above sea level. This reservoir supplies drinking water to around 3 million residents in the San Francisco Bay Area. The most popular species caught here are Largemouth bass, Channel catfish, and Smallmouth bass. The study area is located on the west bank of the OShaughnessy Reservoir, a 5 km, dam-impounded reach of the Scioto River ().The Scioto River catchment basin is 16,880 km 2 and empties into the Ohio River at the southern border of the state. 1 of 2 Looking out over Hetch Hetchy reservoir from the O'Shaughnessy Dam in Yosemite National Park, California, on Thurs. Engineering Site Plan Review. All eligible guests* as designated by Policy are permitted to reserve the overnight accommodations. Visit Deer Run while you're here at O'Shaughnessy Reservoir. By James G. Workman. When fishing, anglers can expect to catch a variety of fish including Bluegill, Largemouth Bass and. No Motors. Daily discharge, cubic feet per second -- statistics for Apr 1 based on 101 water years of record more; Min (1994) Most Recent Instantaneous Value Apr 1 25th percen-tile Median Mean 75th percen-tile Max (1922) 21.0: 88.0: 443: 981: 1520: 2270: CONSERVATION AND PRODUCTION RESEARCH LABORATORY. USGS 03221000 Scioto River below O'Shaughnessy Dam nr Dublin OH. The dam is named for engineer Michael OShaughnessy, who oversaw its construction. O'Shaughnessy Reservoir Temperature Statistics . But if there's a strong chance of rain that keeps most of them away. Look for flats with deep water near by an troll saugeye cranks. OShaughnessy Reservoir (912 acres; Delaware County) Crappies move to deeper areas with cover as the water temperature warms. Bottom composition is made up of rock in the south section and mud and silt in the north. Created: June 05, 2022 08:16 AM. Alternate Fishing Times: 12:00AM to 12:00AM. Fall Classic - 10/1. Water Resources Data Ohio Water Year 2005 Volume 1. Thousands of aging dams should be repaired or destroyed, at a cost of billions. I walked across the dam. lake a large inland body of standing water. Fishing Spots. An official website of the United States government. Below are weather averages from 1971 to 2000 according to data gathered from the nearest official weather station. Enjoy our watercraft rental services at the marina of your choice. Most recent instantaneous value: 12.2 04-24-2022 12:00 EDT Prev Next. Species List: According to the Ohio Department of Natural Resources, OShaughnessy Reservoir contains numerous species of popular fish.So, what type of fish are in this reservoir? The Hetch Hetchy Reservoir on Oct 21, 2019. Impounded by OShaughnessy Dam, Hetch Hetchy Reservoir water passes through hydroelectric powerhouses before it enters the San Joaquin Pipelines, the Tesla Ultraviolet Treatment Facility, and the Coast Range Tunnel on its journey to the Bay Area. At .5 mile, a road to the dam breaks off to the right. Fishing O'Shaughnessy Dam, OH on 6/2/2022 will be best from 12:00AM through 12:00AM. The dam is immense, a spectacular sight. The diverse bottom composition and cover from stumps and fallen trees provide excellent habitat for a number of sport fish. Wilmington, OH 45177. Fax: (806) 356-5750. Even though there are no signs, park rangers and dam workers will ask you to turn back to prevent you from getting too close to the dam. Location & Information Fishing O'Shaughnessy Reservoir, OH on 5/23/2022 will be best from 12:00AM through 12:00AM, and from 12:00AM to 12:00AM. 497 catches are logged on Fishbrain. We just dropped the trolling motor and fished the bay we were in. USGS 03220500 O'Shaughnessy Reservoir near Dublin OH. susan.oshaughnessy@usda.gov. Built in 1923, the O'Shaughnessy Dam in Yosemite floods the Hetch Hetchy Reservoir, supplying water and electricity to much of southern California. In 1938 the San Francisco Power and Utility Commission (SFPUC) raised OShaughnessy Dam to 430ft, increasing the noticeably higher water temperatures in this tributary. Kiser Lake (Champaign County) - non-powered sailboats permitted. Fishing O'Shaughnessy Dam, OH on 6/2/2022 will be best from 12:00AM through 12:00AM. Approximately 16 km upstream of Griggs Dam on the Scioto River is the O'Shaughnessy Dam, separating the slightly larger O'Shaughnessy Reservoir (Figure 1) from Griggs Reservoir. Try fishing drop-offs with stumps or other wood. This lake is 1,330 acres in size. Events There is a 10-horsepower motor limit at this reservoir. Andrew J. Ginther, Mayor Contact the Mayor's Office Smart City City Council Council Members OF THE O'SHAUGHNESSY DAM By Leslie W. Stocker (Chief Civil Engineer, Hetch Hetchy Water Supply, San Francisco, Calif.) In the year 1923 the City of San Francisco completed the high concrete O'Shaughnessy Dam, originally known as Hetch Hetchy Dam, which made a reservoir of Hetch Hetchy Valley, in the moun- tains of Tuolumne County, California. OShaughnessy Reservoir was built by the city of Columbus in 1925. OShaughnessy Reservoir (Delaware County) Crappies are very active in the north end of the lake; target submerged cover using minnows suspended under a bobber. OShaughnessy Reservoir is located about 9 miles northwest of Columbus in Delaware County. I am determined to get a saugeye soon. I consider the reservoirs located on the Scioto River to be my home waters. O'Shaughnessy Dam is a place that is next to O'Shaughnessy Reservoir. Hence, the reservoir behind OShaughnessy Dam probably receives no more than 6 in/1000 yrs of sediment. Tuolumne River between OShaughnessy Dam (Hetch Hetchy Reservoir) and the Cherry Creek confluence (known as the Hetch Hetchy Reach). from end to end, becomes a rock-bound lake. Crappies must be nine inches or longer to keep. USGS 03220510 Scioto R. at O'Shaughnessy Dam near Dublin OH. The dam spillway elevation is A teenager was rescued from the O'Shaughnessy Reservoir Tuesday night after being stranded on an island surrounded by swift currents. To answer that question, and provide the wider world a glimpse of the in. Hetch Hetchy Reservoir is formed behind the dam which is the source for the Hetch Hetchy Aqueduct, which provides water for over 2 million people in San Francisco and other municipalities of the west Bay Area. O'Shaughnessy Reservoir is near Powell. But at a meeting Dec. 14, the Columbus City Council breathed new life into the utilities' generation program by approving $15.3 million in bond money to repair the plant at O'Shaughnessy Dam. It is approximately 55 feet deep at its deepest point. The Hetch Hetchy overnight facilities are Cottage 1, Cottage 2, and the Bunkhouse. There is unlimited horsepower on this lake. Winter weather conditions may cause road closures. The nearest weather station for both precipitation and temperature measurements is WESTERVI which is approximately 9 miles away and has an elevation of 810 feet (6 feet higher than O'Shaughnessy Reservoir). Maximum depth is over 40 feet near the dam, although much of the water is 20 feet or less. Mountain reservoir. Disclaimer. Steve Evett, Susan OShaughnessy, and their colleagues at the ARS Conservation and Production Research Laboratory in Bushland, Texas have spent years trying to help growers maximize water in a region that depends on the Ogallala Aquifer, a massive underground reservoir under constant threat of overuse. For purposes of this review, a one- hydrologic, and water temperature time series data, are generally limited in space and time. The problem with osheay is all the weighted down wake boats and such a narrow lake (pretty much a river). Fire Contractor. Fun for all group sizes we have activities for all ages. The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. PROVISIONAL DATA SUBJECT TO REVISION. It took eight years to build OShaughnessy dam and another 11 to complete an aqueduct to carry the water 160 miles west. Deer Run Powell, OH. Sample ID will include: First 4 letters of When fishing, anglers can expect to catch a variety of fish including Bluegill, Largemouth Bass and. This reservoir supplies drinking water to around 3 million residents in the San Francisco Bay Area. O'Shaughnessy Reservoir: Location: The location of this catch is only visible to Fishidy members. Weather Forecast Office Wilmington, OH Arkansas Red-Basin River Forecast Center Ohio River Forecast Center River Observations: River Forecasts: Long-Range Flood Risk At or Below Low Water Threshold Last map update: 05/14/2022 at 12:32:50 pm EDT 05/14/2022 at 16:32:50 UTC What is UTC time? The reservoir is 912 acres in size and has 18.4 miles of shoreline. O'Shaughnessy Reservoir is located in Delaware County, Ohio. Because the nearest station Due to its high-altitude location at 3,900 feet above sea level and its snowmelt-fed water supply, water from Hetch Hetchy Reservoir behind OShaughnessy Dam does not require filtration. By 1934, Tuolumne River water flowed freely to San Francisco homes. Columbus Audubon. The 2022 Better Half Tour. Albany County Sheriff's Deputies were at the scene of Thompson's lake after a boat flipped over, requiring emergency medical attention for a Yeah osheay won't be any better then alum. Remember to adjust these times based on barometric pressure, and weather changes. Lake Milton Bass Fishing Report 4.23.22. Removing OShaughnessy Dam is a popular topic for newspaper and magazine articles and the idea of removing OShaughnessy Dam to restore Hetch Hetchy Valley (or not to dam it to begin with) has been discussed for a century. It is an old idea, yet it has gained momentum and publicity in the past decade. Remember to adjust these times based on barometric pressure, and weather changes. Fished from 7:30-10:00am this morning with little success. See this graph on the Monitoring Location Pages. O'Shaughnessy Dam Powell, OH. Lure/Bait: Buy Now Blue Fox Classic Vibrax Spinners: Length: 1 ft. 0 in. Eleanor Reservoir (15) Below OShaughnessy (15) Below OShaughnessy (15) Upper McCabe (15-30) Upper McCabe Lake water temperature, air temperature, gear type and a unique number identifying the sample throughout field sampling, storage, transport, laboratory processing and analysis procedures. We launched from the Robinsons Point ramp and the stained water was at normal pool. WIND MAP & Visible to: Everyone: Catch Conditions. Spring Fling - 5/7. Water Resources Data Ohio Water Year 2005 Volume 1. AddThis. During the last ice age, about 50,000 years ago, glaciers covered nearly one-third of Earth and oceans were about 400 feet lower ings on the water at OShaughnessy Reservoir on a laptop computer. Concentrated my efforts on the south end hoping for saugeye. Fishing Information: OShaughnessy Reservoir is a popular fishing lake in Ohio. Temperature, water, degrees Celsius. New surface storage may be costly relative to its water supply benefits. OShaughnessy Reservoir Water Levels to Be Impacted Due to Maintenance on Dam. Will move up to shallower water at night to feed. The reservoir, created by damming the Scioto River, provided a needed water source for the city. The Columbus Department of Public Utilities will be performing maintenance on the OShaughnessy Dam to improve safety and the operational efficiency of the structure. County Boundaries. O'Shaughnessy Reservoir: Location: The location of this catch is only visible to Fishidy members. National Weather Service. PROVISIONAL DATA SUBJECT TO REVISION. AddThis Utility Frame. fueled temperature swings that have altered water availability. Including additions made between 1934 and 1938, the dam currently stands 430 feet (131 m) Research Agricultural Engineer. May Temperature Delaware Municipal Airport (6.2 miles) 2022 April May. in. The main sources of drinking. April 25, 2022. Take this easy and short walk to the O'Shaughnessy Dam to catch views of the reservoir and two waterfalls- Tueeulala Fall and Wapama Fall. Others, such as non-native brown trout, need cooler temperatures year-round, so releases of cold water are vital during hot summer months. Phone: (806) 356-5770. Green Pine Lake (Punderson State Park) - non-powered sailboats permitted. Jun 11, 2021. Map Overlays. This dam has long been recognized as an engineering marvel, but not many people really know why. Most recent instantaneous value: 12.2 04-24-2022 12:00 EDT Prev Next. Hetch Hetchy was dammed for San Francisco water needs in 1923, despite a decade-long battle by John Muir and the Sierra Club, but the valley is O'Shaughnessy Reservoir: Location: The location of this catch is only visible to Fishidy members. The dam forms O'Shaughnessy Reservoir, which is a major source of drinking water for the city of Columbu The smallest lakes can receive 2 ft/1000 yrs of sediment, whereas larger natural lakes such as Tenaya Lake may receive 6 in/1000 yrs.