121 
Project water supplies, to the extent consistent 
with paragraph (1). 
(B) REQUIREMENTS.—If the Secretary de-
termines to manage rates of pumping at the 
C.W. ‘‘Bill’’ Jones and the Harvey O. Banks 
pumping plants in the southern Delta to 
achieve a reverse OMR flow rate less negative 
than ¥5,000 cubic feet per second, the Sec-
retary shall— 
(i) document in writing any signifi-
cant facts regarding real-time conditions 
relevant to the determinations of OMR re-
verse flow rates, including— 
(I) targeted real-time fish moni-
toring in the Old River pursuant to 
this section, including monitoring in 
the vicinity of Station 902; and 
(II) near-term forecasts with 
available salvage models under pre-
vailing conditions of the effects on 
Delta smelt of OMR flow of ¥5,000 
cubic feet per second; and 
(ii) explain in writing why any deci-
sion to manage OMR reverse flow at rates 
less negative than ¥5,000 cubic feet per 
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second is necessary to comply with the en-
vironmental standard in subparagraph 
(e)(1), after considering relevant factors 
such as— 
(I) the distribution of Delta 
smelt throughout the Delta; 
(II) the potential effects of high 
entrainment risk on subsequent Delta 
smelt abundance; 
(III) the water temperature; 
(IV) other significant factors rel-
evant to the determination, as re-
quired by applicable Federal or State 
laws; 
(V) turbidity; and 
(VI) 
whether 
any 
alternative 
measures could have a substantially 
lesser water supply impact. 
(5) IMMEDIATE ACTION.—Nothing in this sec-
tion shall prevent the Secretaries of the Interior or 
Commerce from taking immediate action to reduce 
pumping if necessary to do so to comply with the 
Endangered Species Act, its implementing regula-
tions, or to avoid additional adverse effects on the 
listed fish species beyond the range of effects antici-
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pated to occur to the listed fish species for the dura-
tion of the applicable biological opinion. 
(f) FIRST SEDIMENT FLUSH.—During the first flush 
of sediment out of the Delta in each water year, based 
on objective evidence and notwithstanding subsection (e), 
the Secretary of the Interior shall manage OMR flow pur-
suant to the portion of the smelt biological opinion that 
protects adult Delta smelt from the first flush if required 
to do so by the smelt biological opinion. 
(g) CONSTRUCTION.—The Secretaries of the Interior 
and Commerce may— 
(1) implement subsection (e) building on, and 
taking into account the effects of, previous oper-
ations in the 2014 and 2015 water years; and 
(2) use the results of monitoring through early 
warning surveys to make real-time operational deci-
sions under the applicable biological opinion. 
(h) CALCULATION OF REVERSE FLOW IN OMR.— 
Not later than 180 days after the date of enactment of 
this Act, the Secretary, in consultation with the California 
Department of Water Resources, consistent with the smelt 
biological opinion and the salmonid biological opinion, 
shall— 
(1) review, including seeking public comment 
regarding, whether any revision to the method used 
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to calculate reverse flow in the OMR for implemen-
tation of the reasonable and prudent alternatives in 
the smelt biological opinion and the salmonid biologi-
cal opinion for the purpose of using the best avail-
able science and monitoring to maximize fish and 
water supply benefits is warranted; and 
(2) implement the revised method to calculate 
reverse flow in the OMR pursuant to paragraph (1). 
(i) SUCCESSOR BIOLOGICAL OPINIONS.—The Secre-
taries of the Interior and Commerce shall apply the provi-
sions of this Act to successor biological opinions to the 
salmonid biological opinion and the smelt biological opin-
ion, to the extent that the Secretaries of the Interior and 
Commerce determine to be consistent with— 
(1) section 701(a)(3); and 
(2) the Endangered Species Act of 1973 (16 
U.S.C. 1531 et seq.) and the regulations imple-
menting that Act. 
SEC. 302. EMERGENCY OPERATIONS. 
(a) WATER SUPPLIES.—The Secretaries of the Inte-
rior and Commerce shall provide the maximum quantity 
of water supplies practicable to Central Valley Project ag-
ricultural, municipal, and industrial contractors, water 
service or repayment contractors, water rights settlement 
contractors, exchange contractors, refuge contractors, and 
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State Water Project contractors, by approving, in accord-
ance with applicable Federal and State laws (including 
regulations), operations or temporary projects to provide 
additional water supplies as quickly as practicable, based 
on available information, to address the emergency condi-
tions. 
(b) ADMINISTRATION.—In carrying out subsection 
(a), the Secretaries of the Interior and Commerce shall, 
in accordance with applicable laws (including regula-
tions)— 
(1)(A) in close coordination with the California 
Department of Water Resources and the California 
Department of Fish and Wildlife, implement a pilot 
project to test and evaluate the ability to operate the 
Delta cross-channel gates daily or as otherwise may 
be appropriate to keep the gates open to the max-
imum extent practicable to protect out-migrating 
salmonids, manage salinities in the interior Delta 
and any other water quality issues, and maximize 
Central Valley Project and State Water Project 
pumping, subject to the condition that the pilot 
project shall be designed and implemented consistent 
with operational criteria and monitoring criteria re-
quired by the California State Water Resources Con-
trol Board, including its order, ‘‘Order Approving a 
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