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No. 9496518
United States Court of Appeals for the Ninth Circuit
Save the Colorado v. Usdoi
No. 9496518 · Decided April 24, 2024
No. 9496518·Ninth Circuit · 2024·
FlawFinder last updated this page Apr. 2, 2026
Case Details
Court
United States Court of Appeals for the Ninth Circuit
Decided
April 24, 2024
Citation
No. 9496518
Disposition
See opinion text.
Full Opinion
NOT FOR PUBLICATION FILED
UNITED STATES COURT OF APPEALS APR 24 2024
MOLLY C. DWYER, CLERK
U.S. COURT OF APPEALS
FOR THE NINTH CIRCUIT
SAVE THE COLORADO; et al., No. 23-15247
Plaintiffs-Appellants, D.C. No. 3:19-cv-08285-MTL
v.
MEMORANDUM*
U.S. DEPARTMENT OF THE INTERIOR;
DEB HAALAND, Secretary of the Interior,
Defendants-Appellees,
COLORADO RIVER ENERGY
DISTRIBUTORS ASSOCIATION; et al.,
Intervenor-Defendants-
Appellees,
______________________________
STATE OF NEW MEXICO,
Intervenor.
Appeal from the United States District Court
for the District of Arizona
Michael T. Liburdi, District Judge, Presiding
Argued and Submitted February 6, 2024
Phoenix, Arizona
Before: MURGUIA, Chief Judge, and HAWKINS and JOHNSTONE, Circuit
*
This disposition is not appropriate for publication and is not precedent
except as provided by Ninth Circuit Rule 36-3.
Judges.
Save the Colorado, Living Rivers, and Center for Biological Diversity
(collectively, “Appellants”) appeal the district court’s grant of summary judgment
for the U.S. Department of the Interior, the Secretary of the Interior (“Secretary”),
and intervenors (collectively, “Interior”) and the denial of Appellants’ motion for
summary judgment. Appellants maintain that Interior violated the National
Environmental Policy Act (“NEPA”), 42 U.S.C. §§ 4321–70, and the
Administrative Procedure Act (“APA”), 5 U.S.C. §§ 701–06, first when it issued a
Record of Decision and Final Environmental Impact Statement (“FEIS”) for the
Long-Term and Experimental Management Plan (“LTEMP”) and second when it
declined to prepare a Supplemental Environmental Impact Statement (“SEIS”).
The LTEMP is a twenty-year adaptive framework to manage the monthly, daily,
and hourly water releases from Glen Canyon Dam. We have jurisdiction under 28
U.S.C. § 1291, and we affirm.
We review de novo the district court’s ruling on cross-motions for summary
judgment. Or. Nat. Desert Ass’n v. U.S. Forest Serv., 957 F.3d 1024, 1032 (9th
Cir. 2020). Our review of Interior’s compliance with NEPA is governed by the
APA’s deferential arbitrary and capricious standard. Friends of Animals v. U.S.
Fish & Wildlife Serv., 28 F.4th 19, 28 (9th Cir. 2022); 5 U.S.C. § 706(2)(A).
“Under this standard, we ‘must determine whether [Interior] considered the
2
relevant factors and articulated a rational connection between the facts found and
the choices made.’” Friends of Animals, 28 F.4th at 28 (quoting Ranchers
Cattlemen Action Legal Fund United Stockgrowers of Am. v. U.S. Dep’t of Agric.,
499 F.3d 1108, 1115 (9th Cir. 2007)).
1. We agree with the district court that the LTEMP FEIS purpose and need
statement was reasonable. See Alaska Survival v. Surface Transp. Bd., 705 F.3d
1073, 1084 (9th Cir. 2013). A purpose and need statement must “briefly specify
the underlying purpose and need to which the agency is responding.” 40 C.F.R.
§ 1502.13 (1978) (amended 2020).1
Appellants contend that Interior impermissibly elevated hydroelectric power
generation in its purpose and need statement. We disagree. Interior developed the
LTEMP FEIS pursuant to the Grand Canyon Protection Act of 1992, which directs
the Secretary to operate Glen Canyon Dam in a way that protects downstream
resources and meets water storage and release obligations set forth in other existing
legal authorities. See Reclamation Projects Authorization and Adjustment Act of
1992, Pub. L. No. 102-575, § 1802(a)–(b), 106 Stat. 4600, 4669 (1992). One such
authority is the Colorado River Storage Project Act of 1956, which directs the
Secretary to operate hydroelectric powerplants—including Glen Canyon Dam—“to
1
Because the 1978 versions of NEPA’s implementing regulations were in effect
when Interior issued the LTEMP FEIS, we cite to the 1978 versions here.
3
produce the greatest practicable amount of power and energy” so long as it does
not “affect or interfere with” the integrity of other non-power beneficial uses. 43
U.S.C. § 620f; see also id. § 620 (describing hydroelectric power production as “an
incident of” other water uses). The LTEMP FEIS purpose and need statement
recognized this balance, listing “the generation of hydroelectric power” as but one
objective following a list of non-power needs the LTEMP was to serve. See City of
L.A. v. Fed. Aviation Admin., 63 F.4th 835, 844 (9th Cir. 2023) (“It is appropriate
for an agency to draft a purpose and need statement with reference to the agency’s
statutory mandates.”).
Appellants also argue that the purpose and need statement was too narrow
because it did not include “the need to adaptively manage Glen Canyon Dam under
all projected climate change conditions.” However, Appellants have not shown that
this omission made the purpose and need statement unreasonable, especially given
the LTEMP’s intended function and the statutory context in which the FEIS was to
be developed. See Westlands Water Dist. v. U.S. Dep’t of Interior, 376 F.3d 853,
866–68 (9th Cir. 2004) (reviewing purpose and need statement considering the
agency’s statutory objectives and the project’s focus).
Thus, in view of the “considerable discretion” we afford agencies in defining
the scope of their projects, Friends of Se.’s Future v. Morrison, 153 F.3d 1059,
4
1066–67 (9th Cir. 1998), we conclude that the LTEMP FEIS purpose and need
statement complied with NEPA.
2. We further agree with the district court that Interior adequately
considered a reasonable range of alternatives to address the LTEMP FEIS’s stated
purpose and need. See 40 C.F.R. § 1502.14(a) (1978) (amended 2020). The seven
alternatives that the LTEMP FEIS examined in full were sufficiently distinct. The
alternatives featured several “different operational strategies (e.g., consistent
monthly release pattern or condition-dependent release pattern) or had different
primary objectives,” ranging from native fish recovery to hydropower generation.
This range of alternatives allowed Interior and the public to evaluate multiple,
reasonable plans for the timing of dam releases. See Westlands, 376 F.3d at 872.
Interior also did not unreasonably decline to consider Appellants’ proposed
alternatives without adequate explanation. Each of Appellants’ proposed
alternatives would either reduce (or eliminate) hydropower generation at Glen
Canyon Dam or run afoul of the LTEMP’s limited purpose of creating monthly,
daily, and hourly water release schedules. See League of Wilderness Defs.-Blue
Mountains Biodiversity Project v. U.S. Forest Serv., 689 F.3d 1060, 1072–73 (9th
Cir. 2012). The LTEMP FEIS adequately articulated these concerns. See 40 C.F.R.
§ 1502.14(a) (1978). And although NEPA required Interior to consider “reasonable
alternatives not within [its] jurisdiction,” 40 C.F.R § 1502.14(c) (1978), Appellants
5
failed to establish that their proposed alternatives were reasonably viable. See City
of Angoon v. Hodel, 803 F.2d 1016, 1021–22 (9th Cir. 1986).
3. We also reject Appellants’ contention that Interior failed to take a “hard
look” at the environmental consequences of the LTEMP in light of climate change.
See Audubon Soc’y of Portland v. Haaland, 40 F.4th 967, 984 (9th Cir. 2022).
Because the LTEMP controls the sub-annual timing of water releases from Glen
Canyon Dam—and not the volume of water it must release each year2—Interior
reasonably focused its climate-change analysis on comparing the performance and
effect of each of the seven alternatives under various climate change conditions,
rather than providing a full-fledged assessment of water availability in the
Colorado River Basin. See id. at 985–86; see also 40 C.F.R. § 1500.1(b) (1978)
(amended 2020) (stating that agencies are to “concentrate on the issues that are
truly significant to the action in question”). Interior ran models of each alternative,
assuming annual release rates between 7 maf and 19.2 maf, with a median of 8.23
2
Annual water release volumes are prescribed by the Criteria for the Coordinated
Long-Range Operations of Colorado River Reservoirs, 35 Fed. Reg. 8951 (June
10, 1970), and the Review of Existing Coordinated Long-Range Operating Criteria
for Colorado River Reservoirs, 70 Fed. Reg. 15873 (Mar. 29, 2005), as currently
implemented through the 2007 Colorado River Interim Guidelines for Lower Basin
Shortages and Coordinated Operations for Lake Powell and Lake Mead (“2007
Interim Guidelines”), 73 Fed. Reg. 19873 (Apr. 11, 2008). Under the 2007 Interim
Guidelines, Glen Canyon Dam must release water according to four operating tiers,
each of which is determined annually based on hydrological conditions. Even
under the lowest tier, Glen Canyon Dam must release at least 7 million-acre feet
(“maf”) of water annually. See 2007 Interim Guidelines, 73 Fed. Reg. at 19890.
6
maf, throughout the LTEMP period. Interior then applied these models to 21
hydrologic scenarios, which “represented a range of possible [conditions] from dry
to wet.” The scenarios were based on historic annual inflow rates into Lake Powell
(from 1906 to 2010) and were “weighted according to their frequency of
occurrence” in the Bureau of Reclamation’s 2012 Colorado River Basin Water
Supply and Demand Study (“Basin Study”). Interior “gave greater weight to the
driest years to represent their expected increased frequency of occurrence under a
climate-change scenario.” After running these models, Interior concluded that the
“differences in hydrology would influence the relative effect of LTEMP
alternatives on resources, but, in general, the analysis conducted for this EIS
indicates that the differences would be relatively small (<5%) and not differ greatly
among alternatives.”
Appellants argue that Interior’s reliance on historical inflow data in its
climate analysis rendered it “stale.” We disagree. Although Interior could have
chosen a methodology that used forward-looking projections to conduct this
analysis, it accounted for future drying trends by overweighting the driest years
observed. Because there is no evidence that the choice to use historical data
rendered its findings unreasonable or inaccurate, we defer to Interior’s technical
expertise. See League of Wilderness Defs., 752 F.3d at 763–64; cf. N. Plains Res.
Council v. Surface Transp. Bd., 668 F.3d 1067, 1085–86 (9th Cir. 2011) (rejecting
7
agency’s use of decades-old aerial surveys to estimate then-existing fish counts
because the surveys lacked an indication of reliability).
Interior also did not arbitrarily omit relevant worst-case climate change
conditions from the Basin Study in its climate change assessment. See Edwardsen
v. U.S. Dep’t of Interior, 268 F.3d 781, 785 (9th Cir. 2001). Interior recognized that
its simulations “were not representative of the full range of expected inflow
variation under [the Basin Study’s] climate change scenario” because “[a]bout
30%” of the mean annual inflow rates projected by the Basin Study were lower
than the lowest inflow rates Interior modeled. But based on results from the models
it ran, Interior determined that further analysis was unnecessary because “the
relative performance of the alternatives would be consistent regardless of the
uncertainty of the effects of climate change.”3 In other words, the historically
weighted simulations adequately informed Interior’s choice among alternatives
given the small differences in their relative performance under a variety of climate
conditions.
3
It is discernible from the LTEMP FEIS that Interior chose to omit the Basin
Study’s worst-case climate scenarios from its climate change models because
(1) the projected conditions did not occur in the historical record, and (2) the
models demonstrated that the alternatives’ downstream effects would remain fairly
consistent—overall and relative to one another—even under drier climate
conditions. These rationales reasonably support this omission. Cf. Seattle Audubon
Soc’y v. Espy, 998 F.2d 699, 704 (9th Cir. 1993).
8
Even without the Basin Study’s worst-case conditions, the LTEMP FEIS
climate change model served its purpose as a tool to compare the relative
robustness of the alternatives under changing climate conditions; it was never
intended to predict those conditions. See Idaho Wool Growers Ass’n v. Vilsack, 816
F.3d 1095, 1109–10 (9th Cir. 2016) (accepting agency’s use of a disputed model in
light of its “limited purpose”; the agency’s attempt to “account[] for the uncertainty
of the variables involved”; and the agency’s disclosure of “the assumptions on
which it built the model and the uncertainties inherent in it”). “NEPA does not
require that we decide whether an [FEIS] is based on the best scientific
methodology available, nor does NEPA require us to resolve disagreements among
various scientists as to methodology.” 350 Mont. v. Haaland, 50 F.4th 1254, 1271–
72 (9th Cir. 2022) (quoting Friends of Endangered Species, Inc. v. Jantzen, 760
F.2d 976, 986 (9th Cir. 1985)).
4. However, Interior violated NEPA by failing to explain its decision not to
prepare an SEIS.4 “An agency must make a reasoned decision whether an SEIS is
4
Because we consider Interior’s silence in response to Appellants’ June 2019
demand letter to be a decision not to prepare an SEIS, we review it under the
arbitrary and capricious standard of 5 U.S.C. § 706(2)(A). See Friends of the
Clearwater v. Dombeck, 222 F.3d 552, 556 (9th Cir. 2000). Accordingly, the
district court did not abuse its discretion in denying Appellants’ motion to
supplement the record or take judicial notice of post–SEIS-letter information. See
Sw. Ctr. for Biological Diversity v. U.S. Forest Serv., 100 F.3d 1443, 1447 (9th
Cir. 1996).
9
required,” which we must be able to discern from the record. Great Old Broads for
Wilderness v. Kimbell, 709 F.3d 836, 855 (9th Cir. 2013) (citing Friends of the
Clearwater, 222 F.3d at 557). Interior never responded to Appellants’ demand
letter, which contained studies published after the release of the LTEMP FEIS that
purportedly undermined its climate change analysis. Thus, there is no “reasoned
decision, documented in the record” explaining why an SEIS was not required for
us to review. Id.
Ultimately, though, this error was harmless. See 5 U.S.C. § 706. An agency
must prepare an SEIS “if . . . [t]here are significant new circumstances or
information relevant to environmental concerns and bearing on the proposed action
or its impacts.” 40 C.F.R. § 1502.9(c)(1)(ii) (1978) (amended 2020). But by
Appellants’ own admission, the “collection of research” they presented “relie[d]
primarily on data which was available at the time of the LTEMP FEIS’
publication.” At best, the studies reflect different methodological choices that were
before Interior when it published the LTEMP FEIS. See 350 Mont., 50 F.4th at
1271–72. And although the studies collectively show that “hot droughts” are
increasingly likely to occur, the LTEMP FEIS acknowledged that “increases in
temperature and decreases in water supply . . . driven by global climate change”
were likely. Thus, Interior reasonably decided that it could evaluate the relative
10
performance of the alternatives under changing climate conditions by treating these
trends as external uncertainties.
Because there is no indication that the studies contain information “not
already considered” or that would “materially affect[] the substance of [Interior’s]
decision” regarding the timing of water releases from Glen Canyon Dam, no
prejudice resulted from Interior’s failure to respond to Appellants’ letter. Idaho
Wool Growers, 816 F.3d at 1104–06.
AFFIRMED.
11
Plain English Summary
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS APR 24 2024 MOLLY C.
Key Points
01NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS APR 24 2024 MOLLY C.
02COURT OF APPEALS FOR THE NINTH CIRCUIT SAVE THE COLORADO; et al., No.
03DEPARTMENT OF THE INTERIOR; DEB HAALAND, Secretary of the Interior, Defendants-Appellees, COLORADO RIVER ENERGY DISTRIBUTORS ASSOCIATION; et al., Intervenor-Defendants- Appellees, ______________________________ STATE OF NEW MEXICO, Interven
04Liburdi, District Judge, Presiding Argued and Submitted February 6, 2024 Phoenix, Arizona Before: MURGUIA, Chief Judge, and HAWKINS and JOHNSTONE, Circuit * This disposition is not appropriate for publication and is not precedent except as
Frequently Asked Questions
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS APR 24 2024 MOLLY C.
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