Transcript Slide 1

CVPIA §3406(b)(2) Water
Operations on the Sacramento
River
Sacramento River Conservation Area Forum
Technical Advisory Committee
February 7, 2012
Central Valley Streams
Objective
• Provide an overview of the CVPIA (b)(2) water
program.
• Provide background and relationship of the
CVPIA Anadromous Fish Restoration Program
(AFRP).
• Management of (b)(2) water to improve
salmonid habitat in the Sacramento River.
Central Valley Improvement Act, 1992
Purposes
• To protect, restore, and enhance fish, wildlife, and
associated habitats in the Central Valley;
• To address impacts of the CVP on fish, wildlife,
and associated habitats;
• To improve operational flexibility of the CVP
CVPIA Section 3406 (b)(2) water
• Purpose: A CVPIA program that dedicates and
manages 800,000 AF annually of CVP water.
• Authority: CVPIA in 1992. (b)(2) water is managed
pursuant to conditions specified by the FWS after
consultation with USBR, CDWR, and CDFG.
• (b)(2) Agencies: FWS, USBR, in coordination with
CDFG, CDWR, and NOAA fisheries.
B2 water
CVP controlled
streams and Delta
actions.
Central Valley Improvement Act, 1992
ANADROMOUS FISH RESTORATION PROGRAM
Develop and implement a program to double natural
production of anadromous fish compared to the 19671991 average levels.
AFRP Working Paper (1995) identified flows to achieve
doubling goal in Central Valley rivers and streams.
AFRP Plan (2001) recommended “reasonable” flow
objectives for CVP streams that contribute toward
doubling (restoration) goal.
AFRP Summary of Flow-related
Limiting Factors
• Inadequate timing and/or magnitude of flow to
provide suitable conditions for one or more life
stage.
• Water temperatures that exceed tolerances of one or
more life stage.
AFRP Recommended Flows (Final Restoration Plan)
Upper mainstem Sacramento River
ACTION:
1. Implement a river flow regulation plan that balances carryover
storage needs with instream flow needs consistent with the
1993 biological opinion for winter-run chinook salmon.
2. Implement a schedule for flow changes that avoids, to the
extent controllable, dewatering redds and isolating or stranding
juvenile anadromous salmonids.
3. Continue to maintain water temperatures at or below 56F from
Keswick Dam to Bend Bridge to the extent controllable,
consistent with the NMFS biological opinion and with SWRCB
Order 90-5.
AFRP Recommended Flows (Final Restoration Plan)
Upper mainstem Sacramento River High priority
Recommended minimum Sacramento River flows (cfs) at Keswick Dam for October 1 to April 30 based on
October 1 carryover storage in Shasta Reservoir and critically dry runoff conditions (driest decile runoff of 2.5
maf) to produces a target April 30 Shasta Reservoir storage of 3.0-3.2 maf for temperature control.
Carryover storage (maf)
Keswick release (cfs)
1.9 to 2.1
3,250
2.2
3,500
2.3
3,750
2.4
4,000
2.5
4,250
2.6
4,500
2.7
4,750
2.8
5,000
2.9
5,250
3
5,500
* WY 2012 Shasta Reservoir Inflow through Jan 31: 970 TAF (Driest: 921 TAF – 1977)
DRAFT
Fall-run Chinook – Sacramento River
6 - 13 - 11
Production (natural production of fall-run
for the Sacramento River)
Adult escapememt (Grand Tab)
350,000
Baseline (Mills and Fisher)
300,000
Goal = 230,000
(Final Restoration
Plan)
Hatchery escapement only, 1952 - 1955
250,000
200,000
150,000
100,000
1967-1991
Average
= 115,371
1992-2010
Average
= 75,506
50,000
Figure 6. Estimated yearly natural production and in-river escapement for the entire mainstem Sacramento River adult fall-run
Chinook salmon. 1952 - 1966 and 1992 - 2010 numbers are from CDFG Grand Tab (February 2, 2011). Baseline numbers
(1967 - 1991) are from Mills and Fisher (CDFG, 1994).
2010
2008
2006
2004
2002
2000
1998
1996
1994
1992
1990
1988
1986
1984
1982
1980
1978
1976
1974
1972
1970
1968
1966
1964
1962
1960
1958
1956
1954
0
1952
Estimated number of adult fall-run Chinook,
400,000
Implementation of (b)(2) Water
Management
• May 2003 DOI (b)(2) Decision, as clarified by
December 2003 Interior Guidance Memo.
• The Ninth Circuit’s January 2004 decision, and Judge
Wanger’s September 2008 decision.
• Continued use of (b)(1) re-operation.
Implementation of (b)(2) Water
Management
• WY 2011 was classified as wet in both the
Sacramento and San Joaquin basins.
• End of September 2011 Shasta storage at 3.34 MAF.
• In fall 2011, CVP operations were implemented
consistent with both the NMFS BO for Salmonids
and Sturgeon (June 2009) and FWS BO for Delta
Smelt (December 2008).
CVPIA Section 3406 (b)(2) water
Technical background:
• (b)(2) fish actions are based on forecasted operations,
real-time monitoring, AFRP documents, published
literature, IEP and DFG reports.
• CVPIA’s mandate to double natural production of
anadromous fish.
• CVPIA’s instructions to “…provide flows of suitable
quality, quantity, and timing to protect all life stages
of anadromous fish...”
Shasta Reservoir Storage
(Oct 1, 2011 – Jan 31, 2012)
Shasta Reservoir Inflow
(Oct 1, 2011 – Jan 31, 2012)
Keswick Reservoir Releases
(Oct 1, 2011 – Jan 31, 2012)
Shasta and Keswick Reservoirs – WY 2012 to date
3400000
Shasta Storage
Keswick Release
Shasta Inflow
18000
cfs
16000
3350000
3300000
14000
3250000
12000
3200000
10000
3150000
8000
3100000
6000
3050000
4000
3000000
2000
2950000
0
1-Oct
1-Nov
1-Dec
1-Jan
2900000
1-Feb
Acre Feet
20000
(b)(2) water used to augment Keswick
release
• December 16 – 31, 2011
– Keswick base case: ~4000-4500 cfs
– Keswick releases: ~5000 cfs
• January 1 – 31, 2012
– Keswick base case: ~3250-3500 cfs
– Keswick releases : ~4000-5000 cfs
Questions?