Environmental Assessment

AFFECTED ENVIRONMENT & ENVIRONMENTAL CONSEQUENCES CHAPTER 3
square mile for the planning area. The Pine Mountain WRHU retains the lowest average density at
approximately 2.48 miles per square mile with the Potholes WRHU having the highest density
(system/designated) at approximately 7.81 miles per square mile.
As previously noted, during the deer hunting season, motorized travel, including OHV use, is restricted
to designated roads within the Fox Butte Cooperative Travel Management Area. Open roads within it
are identifed with a reflective green dot hence the name – Green Dot System. This closure includes a
portion of the designated motorized trails in the East Fort Rock (EFR) OHV trail system. OHV use is
only permitted on designated routes during this period. Table 3-17 displays the effect of this system on
road density within the planning area during hunting season.
Table 3-17 Road and Motorized Trail Density Associated with the Fox Butte Cooperative Travel Management Area Road Closures
Habitat Unit Green Dot
Road Miles
Road Miles Outside
Green Dot Area
3-34
Total Road
Miles
Road Density
(Miles/ Square
Mile)
Non-winter range .09 8.10 mi. 8.19 5.46
Lavacicle WRHU 5.06 0 5.06 .43
Mahogany WRHU 12.94 0 12.94 .68
Pine Mountain WRHU 25.18 0 25.18 1.20
Potholes WRHU 6.86 78.24 85.10 5.62
TePee Draw WRHU 1.36 111.39 112.75 6.61
Total 51.49 197.73 249.22 2.92 (average)
Interagency enforcement has been effective and the closures have signficantly reduced open road
densities in the included areas.
Open Road Densities by Implementation Units (LRMP Consistency): Open road densities expected
under each alternative, including the No Action Alternative, are displayed in Table 3-18. This
information was generated through Forest and District GIS databases.
Table 3-18 Open Road Density by Implementation Unit and Alternative.
Implementatio
n Unit Number
Implementatio
n Unit Area
(Square Miles)
Current
Open Road
Open Road Density
(Miles/Square Mile
Mileage Alt. 1 Alt. 2 Alt. 3
47 48.31 145.83 3.02 3.02 3.02
50 49.00 154.67 3.15 3.14 3.12
51 29.09 83.56 2.87 2.79 2.71
52 21.43 44.76 2.09 2.00 1.76
53 4.98 7.82 1.57 1.57 1.21
56 39.65 65.83 1.66 1.66 1.66
57 25.25 91.56 3.63 3.39 2.88
62 28.49 112.47 3.95 3.95 3.95
63 39.17 135.72 3.46 3.46 3.44
There is no change in open road density in three of the Implementation Units: 47, 56, and 62.
Implementation Unit (IU) 56 is currently below and would remain below 2.5 miles per square mile.
Both IU 47 and 62 remain above the target density at 3.02 and 3.95 miles per square mile. It should be
noted that only small portions of the planning area overlap these latter two implementation units.
Of the remaining six (6) Implementation Units, only two, IU 52 and 53 would be below the target open
road density under all three alternatives. The remaining three Implementation Units, 50, 51, and 57, all
remain above the target density. IU 50 would see a small drop in road density from the existing 3.15