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Tulloch Reservoir
and
The Drought of 2012-201?
TRI-DAM PROJECT
Ron Berry
Susan Larson
March 7, 2015
Why Are You Here?
 “Fish win another water fight round” 12/23/14 Manteca Bulletin
 “Drought could spur draining of Tulloch Lake”
2/17/15 M...
Why Are We Here?
 Like YOU, We Care
 We Manage The Reservoir
 We Generate Power
 We Live Here
 Drought
 Mandates
What is Tri-Dam?
and Why are We Here?
Tri-Dam Project is an agency formed by two Irrigation Districts:
the Oakdale Irrigat...
DONNELLS
RESERVOIR
Donnells Reservoir is located in a
steep rocky canyon on the Middle
Fork of the Stanislaus River. The
r...
BEARDSLEY
RESERVOIR
Beardsley Reservoir is located in a
steep canyon of the Middle Fork
of the Stanislaus River system
app...
Tulloch Reservoir
Tulloch Reservoir sits immediately
downstream of New Melones
Reservoir, operated by the Bureau
of Reclam...
Total Project Costs in 1955 Dollars
 Donnells and Beardsley $31,200,000
 Tulloch and Goodwin Revision $18,500,000
Total ...
{
Stanislaus River Projects
How Are Reservoirs Levels At Tulloch Established?
1. US Bureau of Reclamation (BOR) determines Tulloch’s
operating levels
...
Melones Reservoir
In 1924, planning began as OID and SSJID combined with PG&E and the San
Francisco Electric Company in an...
Maximum Reservoir Elevation 1088.0 ft
Maximum Reservoir Storage 2.4M af
Maximum Winter Elevation 1049.5 ft
New Melones Res...
Regulatory Agencies Along The Basin
 US Bureau of Reclamation (BOR)
 State Water Resources Control Board (SWRCB)
 Natio...
as of 3/6/15
Current Conditions
 Fourth Dry Year
 Average rainfall for Middle Fork of Stanislaus River 37.5 inches
 Pre...
Sept. 2012 1,510,706 acre feet
Diff = 463,651
Sept. 2013 1,047,055 acre feet
Diff = 527,380
Sept. 2014 519,675 acre feet
S...
Normal Annual Runoff into NM = 1,050,000 af
Current Storage in New Melones = 605,550 af
Projected Inflow (90% Exceedance) ...
Useable Storage for 2015 577,070 af
SSJID/OID Diversions (2014) 420,000 af
Balance for BOR Fish Flows 157,070 af
OCAP Tabl...
California Population in
1978: 22M
California Population in
2015: 39M
Population increase of 42%
while reservoir storage
i...
Reservoir schedule finalized
Summer Projections
Fall Projections
What Can We Expect?
2016 and Beyond…
Normal
rainfall
year
Another
dry year
Establish dry year
release policy—
reduced release
mandates
Additio...
What's Ahead…
 Immediately following today’s meeting, today’s PowerPoint will be posted on
Tri-Dam’s website, www.tridamp...
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Tri-Dam Project presentation from the Tulloch Reservoir Public Community Meeting.

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Tulloch Reservoir and the Drought of 2012-201?

  1. 1. Tulloch Reservoir and The Drought of 2012-201? TRI-DAM PROJECT Ron Berry Susan Larson March 7, 2015
  2. 2. Why Are You Here?
  3. 3.  “Fish win another water fight round” 12/23/14 Manteca Bulletin  “Drought could spur draining of Tulloch Lake” 2/17/15 Modesto Bee  “Feds want to drain Tulloch for fish” 2/20/15 Union Democrat  “Tulloch draining concerns Calaveras” 2/25/15 Union Democrat  “Fish vs. people frustration rages at Oakdale Irrigation District meeting” 3/3/15 Modesto Bee  “Draining Lake Tulloch: A symptom of decades of failed policy” 3/5/15 Opinion – Union Democrat
  4. 4. Why Are We Here?  Like YOU, We Care  We Manage The Reservoir  We Generate Power  We Live Here  Drought  Mandates
  5. 5. What is Tri-Dam? and Why are We Here? Tri-Dam Project is an agency formed by two Irrigation Districts: the Oakdale Irrigation District and the South San Joaquin Irrigation District. Together Tri-Dam developed, operate and maintain four (4) power generation facilities, with 24 employees in total: Donnells Reservoir — 64,325 A/F, 72.0 Mw Beardsley Reservoir – 97,802 A/F, 11.0 Mw Sandbar Powerhouse – 16.2 Mw Tulloch Reservoir — 66,968 A/F, 25.9 Mw The facilities operated by Tri-Dam includes the dams, tunnels, penstocks, power houses, communications systems, and general offices. These facilities are located along the Middle Fork of the Stanislaus River in Tuolumne County, California. Tri-Dam Project is governed by a joint board of directors composed of the five member boards of the two Irrigation Districts. Downstream the water is used to irrigate approximately 117,500 acres of Central Valley farm land including but not limited to almonds, walnuts, and other pasture crops.
  6. 6. DONNELLS RESERVOIR Donnells Reservoir is located in a steep rocky canyon on the Middle Fork of the Stanislaus River. The reservoir is accessed by a narrow and winding route where safe travel speeds average less than 10 mph. No facilities are provided for boating. The steep rocky terrain limits foot access to only small portions of the shoreline. No developed recreation facilities exist at the reservoir, however the area is popular for day use, dispersed camping and fishing. The reservoir is open all year, but road access is subject to winter closure.
  7. 7. BEARDSLEY RESERVOIR Beardsley Reservoir is located in a steep canyon of the Middle Fork of the Stanislaus River system approximately 9 miles downstream from Donnells Reservoir. Beardsley Reservoir is accessed by a steep and winding paved route where safe travel speeds average 20-30 mph.
  8. 8. Tulloch Reservoir Tulloch Reservoir sits immediately downstream of New Melones Reservoir, operated by the Bureau of Reclamation. Tulloch reservoir is situated within two Counties, Calaveras and Tuolumne. Normal summer operating level ranges between 506.5 – 509.5 elevation. Maximum storage is 66,968 af.
  9. 9. Total Project Costs in 1955 Dollars  Donnells and Beardsley $31,200,000  Tulloch and Goodwin Revision $18,500,000 Total $49,700,000*  Federal Dollars Invested $0  State Dollars Invested $0  Taxpayer Dollars Invested $0  OID / SSJID Farmers $49,700,000  OID / SSJID obtained pre-1914 water rights within the Stanislaus River Basin *$433,000,000 in 2015 dollars
  10. 10. { Stanislaus River Projects
  11. 11. How Are Reservoirs Levels At Tulloch Established? 1. US Bureau of Reclamation (BOR) determines Tulloch’s operating levels o Winter schedule (normal range 498.6 – 501.6) o Summer schedule (normal range 506.5 – 509.5) 2. Water Distributions o BOR river flow requirements  Environmental Species Act (ESA) Mandates a) Fisheries b) Salinity c) Dissolved oxygen o District irrigation demands  Diversions at Goodwin
  12. 12. Melones Reservoir In 1924, planning began as OID and SSJID combined with PG&E and the San Francisco Electric Company in an agreement to construct the Melones Reservoir which was completed in 1928. The Melones Reservoir held 112,500 acre feet and could irrigate 144,000 acres of land in both districts. Years later, the Federal government took over Melones and greatly increased its capacity. The water storage facility is now known as New Melones Reservoir and allows OID and SSJID first rights to a combined 600,000 acre feet of water.
  13. 13. Maximum Reservoir Elevation 1088.0 ft Maximum Reservoir Storage 2.4M af Maximum Winter Elevation 1049.5 ft New Melones Reservoir In 1944, Congress authorized the construction of the New Melones Dam to prevent flood damage caused by rain and snowmelt to the 35,000 acres of downstream agricultural land and the communities of Oakdale, Riverbank, and Ripon as well as others further downstream. Congress modified this authorization in the 1962 Flood Control Act to include irrigation, power, wildlife and fishery enhancement, recreation, and water quality as reasons for construction. Approval for and construction of the reservoir was not without public controversy; however, the dam was completed in 1978 by the U.S. Army Corps of Engineers. In this final year, the Corps transferred the project to Reclamation, which has since managed the reservoir and surrounding landscape. The reservoir is now a part of the Central Valley Project, created to provide water to arid areas in California, and to minimize downstream flooding.
  14. 14. Regulatory Agencies Along The Basin  US Bureau of Reclamation (BOR)  State Water Resources Control Board (SWRCB)  National Marine Fisheries Service (NMFS)  US Army Corps of Engineers (USACE)  CA Dept. of Fish and Wildlife (CDFW)  US Fish and Wildlife Service (USFWS)
  15. 15. as of 3/6/15 Current Conditions  Fourth Dry Year  Average rainfall for Middle Fork of Stanislaus River 37.5 inches  Precipitation Year = July 1 to June 30  2011/2012 = 26.34 inches  2012/2013 = 27.83 inches  2013/2014 = 25.75 inches  2014/2015 = 17.44 inches or 47% of normal rainfall  Current Snow Survey – March 1st = 13% of normal  April 1st projection is 12% of normal
  16. 16. Sept. 2012 1,510,706 acre feet Diff = 463,651 Sept. 2013 1,047,055 acre feet Diff = 527,380 Sept. 2014 519,675 acre feet Sept. 2015 (projected) ??? acre feet New Melones End of Month September Storage
  17. 17. Normal Annual Runoff into NM = 1,050,000 af Current Storage in New Melones = 605,550 af Projected Inflow (90% Exceedance) 240,000 af Current Inflow - 3/5/2015 188,480 af Additional Inflow 51,520 af Current Storage 605,550 af (3/5/2015) Gross Storage 657,070 af Dead Pool -80,000 af Useable Storage for 2015 577,070 af Status of New Melones
  18. 18. Useable Storage for 2015 577,070 af SSJID/OID Diversions (2014) 420,000 af Balance for BOR Fish Flows 157,070 af OCAP Table 2e (Fish Flows) 115,000 af Storage Buffer EOSSS 21,900 af Fish Flow Requirements Oct – Dec 65,000 af Shortfall for EOSS 44,900 af Potential for ESA action if shortfall cannot be made up “Estimate” of EOSS Water (End of Month Storage September)
  19. 19. California Population in 1978: 22M California Population in 2015: 39M Population increase of 42% while reservoir storage increased 3.8% during that same period. Reservoir management is a challenging endeavor.
  20. 20. Reservoir schedule finalized Summer Projections Fall Projections What Can We Expect?
  21. 21. 2016 and Beyond… Normal rainfall year Another dry year Establish dry year release policy— reduced release mandates Additional draw downs / run of the river Begin to increase reservoir storage Continue to store all available water in upper reservoirs
  22. 22. What's Ahead…  Immediately following today’s meeting, today’s PowerPoint will be posted on Tri-Dam’s website, www.tridamproject.com  Tri-Dam Staff will be making presentations to Calaveras and Tuolumne Counties Board of Supervisors.  Tri-Dam Staff will continue to provide direct updates to local agencies.  Tri-Dam Staff will post weekly updates at www.tridamproject.com  Tri-Dam Staff will continue discussions with the BOR, NMFS and State Water Board regarding reductions in mandatory releases.  Tri-Dam Staff will finalize the Tulloch Reservoir Schedule – mid-April ??  Tri-Dam Staff will post the Schedule on www.tridamproject.com  Tri-Dam Staff will provide direct mail notification of any drawdowns to all reservoir property owners, agencies and others.  Tri-Dam Staff will establish a Tulloch Informational Group comprised of TDP Staff, agencies, business owners and local residents. Questions and Closing Remarks

Tri-Dam Project presentation from the Tulloch Reservoir Public Community Meeting.

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