BOARD00117 ‎(2)‎

• Board Meeting Date: 1/24/2007
• Description: WSP Section - Glen Canyon Adaptive Management Program - Long-Term Experimental Plan for Future Operation of Glen Canyon Dam EIS
• Board Meetings - Doc Type: Memo

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Table 2.1 Summary of flow and nonflow components of the four experimental options under
consideration by the Glen Canyon Dam Adaptive Management Program. BASE operations
(modified low fluctuating flow regime) are provided for comparison.

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Flow/NonOow BASE Option A Option A Option B Option C
Treatment operations Variation
Increased daily No Yes (increased by Yes (increased No Yes
flow 50% to 66% in by 25% to 66% (increased by
Flow fluctuations winter months and in all months 50% to 66%
by 25% in summer except April in winter
months) and Mav) months)
No No No Yes, (tests of Yes,
Flow Stable tlows 4,8, and 12 (September
months) through
October)
Possible, Yes, as tests under Yes, as tests Yes, as tests Yes, as tests
Flow Beachlhabitat- but only sediment input under sediment under under
building flows under triggering input triggering sediment sediment
hydrologic input input
trigl/;ers triggering triggering
Flow Alternative No Yes (hourly Yes (hourly No Yes (hourly
ramping rates downramping rate downramping downramping
increased 100% in rate increased rate increased
all months) 100% in Apr- by 100% in
Oct and 167% Nov-Jul
in Nov-Mar ) onlv)
Nontlow Temperature No Yes Yes Yes Yes, 2 units
control device assumed
Nontlow Control of No Yes, as needed Yes, as needed Yes, as Yes
nonnative needed
coldwater fish
Nontlow Control of No Yes, as needed, Yes, as needed, Yes, as Yes, with
nonnative with R&D starting with R&D needed, with R&D starting
warmwater in 2007 starting in 2007 R&D 2007
Fish starting in
2007
Nontlow Humpback No Yes Yes Yes Yes, with
chub R&D starting
disease/parasite 2008
research
Nontlow HBC No Yes Yes No Yes
translocation
Nonflow Humpback No Yes Yes Possibly Yes
chub refugee s)
Nontlow HBC No Yes, Planning Yes, Planning No Yes,
population efforts toward efforts and planning
augmentation implementation, as implementation phase
planning needed
Flow and zMini No Yes Possibly Yes Yes
Nonflow experiments
Experimental Not Reverse Reverse Factorial Forward
Design applicable Titration Titration Titration

NOTE: I) For Option C: Ancillary projects not considered part of the main experiment; implementation decision includes consideration of
confounding the main experiment. 2) Mini experiments are short-term field experiments that do not confound main experimental treatment
effects. For Option C: These experiments are considered undefined concepts and would be incorporated if defined and not in contlict with the
main experiment.

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