Comparison of Alternatives and RRFW Plan - Lee's Ferry to Diamond Creek

Alternatives
A B C D E F G H RRFW
No Change From Current No Motors,
Low Use
No Motors,
High Use
Mixed Motors/
Oars,
Low Use
Spread Out Current,
More Non-Comm
50/50 Comm/
Non-Comm Motors/
No-Motors
Mixed Motors/
Oars,
High Use
Preferred Alternative 4 Trips Daily Year-Round Wilderness
Number of Motor /
No-Motor Months
9/3 0/12 0/12 8/4 6/6 6/6 8/4 6/6 0/12
Months with No Motors Sept 15-
Dec 15
All All Mar, Apr,
Sept, Oct
Oct-Mar Jul-Dec Sept-Dec Sept-Feb All
Maximum Number of Launches per Day
Summer 9 4 4 5 6 6 6 6 4
Shoulder 7 2 3 3 3 4 5 3 4
Winter 1 1 2 1 2 2 2 1 4
Maximum Group Size (including guides)
Commercial Motor 43 N/A N/A 25 30 30 40 32/24 N/A
Commercial Oar 39 25 30 25 25 30 30 32/24 16
Noncommercial Standard 16 16 16 16 16 16 16 16 16
Noncommercial Small N/A 8 N/A 8 8 8 8 8 N/A
Maximum Trip Length to Diamond Creek (in number of days)
Summer (May-August)
Commercial Motor 18 N/A N/A 10 8 10 8 10 N/A
Commercial Oar 18 16 16 16 14 16 14 16 18
Noncommercial 18 16 16 16 16 16 14 16 18
Shoulder Seasons (March-April/September-October)
Commercial Motor 18 N/A N/A 10 8 10 8 10 N/A
Commercial Oar 21 18 18 18 16 18 16 18 21
Noncommercial 21 18 18 18 18 18 16 18 21
Winter (November-February)
Commercial Motor 30 N/A N/A 18 N/A 18 N/A N/A N/A
Commercial Oar 30 N/A 21 21 N/A 21 N/A 18 30
Noncommercial Motor 30 N/A N/A 18 N/A 18 18 N/A N/A
Noncommercial Oar 30 18 21 30 21 21 21 25 30
Whitmore Exchanges
Helicopter Exchanges
(months allowed)
All None None None Apr-Sept Jan-Jun Jan-Aug May-Aug None
Hiking Exchanges
(months allowed)
All None All All All All All Mar. Apr,
Sept, Oct
All
Probable Total User-Days
Commercial 113,083 97,694 166,814 137,368 115,500 128,689 115,500 115,500 N/A
Noncommercial 58,048 74,523 115,783 85,946 121,683 106,457 134,410 102,725 N/A
Total 171,131 172,218 282,598 223,314 237,183 235,146 249,910 218,225 483,904
Probable Total Yearly Passengers
Commercial 18,891 7,914 17,686 14,979 16,120 18,671 19,688 19,835 N/A
Noncommercial 3,571 4,980 7,543 5,449 7,693 6,745 8,992 6,482 N/A
Total 22,461 12,894 25,228 20,427 23,812 25,415 28,680 26,317 23,360
Opportunity for Winter
Commercial Trips?
Motor or
oar
No Oar Motor or
oar
No Motor or
oar
No Oar Oar
Wilderness Measures (Summer)
River encounters (Number of groups) p 586 Draft EIS
Motorized Trips 4-6 N/A N/A 3-5 3-5 3-5/N/A 3-5 3-5
Non-Motorized Trips 2-4 2-4 2-4 2-4 2-4 2-4 2-4 2-4
Time In Sight of Other Groups (Number of Minutes) p 587 Draft EIS
All trips 30-45 30-45 30-45 30-45 30-45 30-45 30-45 30-45
Average Daily Encounters (Number Of People)
Commercial Motor 171 1221 1511 107 118 112 120 130 1191
Commercial Oar 188 44 55 94 122 104 135 130 48
Noncommercial Standard 223 51 64 104 134 118 145 146 44
Noncommercial Small 2291 54 701 107 137 121 148 149 511
  1. If such a trip existed under this alternative.

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