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Boundary Butte (Rainbow Plateau) facts for kids

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Boundary Butte
Lake Powell, Glen Canyon.jpg
Northwest aspect
Highest point
Elevation 4,934 ft (1,504 m)
Prominence 897 ft (273 m)
Isolation 2.58 mi (4.15 km)
Parent peak Tower Butte
Geography
Boundary Butte is located in Utah
Boundary Butte
Boundary Butte
Location in Utah
Boundary Butte is located in the United States
Boundary Butte
Boundary Butte
Location in the United States
Location Navajo Reservation
San Juan County, Utah, U.S.
Parent range Colorado Plateau
Topo map USGS Gunsight Butte
Geology
Age of rock Jurassic
Type of rock Entrada Sandstone
Climbing
Easiest route class 5.x climbing

Boundary Butte is a 4,934-foot (1,504 meter) elevation sandstone summit located south of Lake Powell, in extreme southwestern San Juan County, Utah, United States, just north of the Arizona border. It is situated on Navajo Nation land, 11.5 miles (18.5 km) northeast of the town of Page, and towers 1,200 feet above the lake as a landmark of the area. It lies on the Utah-Arizona border, hence its name.

Geology

Boundary Butte is a butte composed primarily of Entrada Sandstone, similar to Dominguez Butte 2.5 miles (4.0 km) to the north, and Tower Butte 2.6 miles (4.2 km) to the southwest. The Entrada Sandstone overlays Carmel Formation, and below that Page Sandstone at lake level. Above the Entrada layers is Romana Sandstone capped by Morrison Formation. It is located in the southern edge of the Great Basin Desert on the Colorado Plateau. Precipitation runoff from this feature drains into the Colorado River watershed.

Gallery

Climate

According to the Köppen climate classification system, Boundary Butte is located in an arid climate zone with hot, very dry summers, and chilly winters with very little snow. Spring and fall are the most favorable seasons to visit.

Climate data for Page, Arizona
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 64
(17.8)
72
(22.2)
82
(27.8)
91
(32.8)
102
(38.9)
107
(41.7)
109
(42.8)
106
(41.1)
100
(37.8)
93
(33.9)
77
(25)
66
(18.9)
109
(42.8)
Average high °F (°C) 43.1
(6.17)
50.3
(10.17)
59.5
(15.28)
68.5
(20.28)
78.5
(25.83)
90.2
(32.33)
95.1
(35.06)
92.0
(33.33)
83.5
(28.61)
69.7
(20.94)
53.8
(12.11)
43.7
(6.5)
69.0
(20.56)
Average low °F (°C) 26.3
(-3.17)
30.4
(-0.89)
37.0
(2.78)
43.6
(6.44)
52.6
(11.44)
62.3
(16.83)
68.3
(20.17)
66.4
(19.11)
58.4
(14.67)
46.6
(8.11)
34.7
(1.5)
27.1
(-2.72)
46.1
(7.83)
Record low °F (°C) −11
(-23.9)
6
(-14.4)
18
(-7.8)
25
(-3.9)
31
(-0.6)
44
(6.7)
56
(13.3)
46
(7.8)
40
(4.4)
24
(-4.4)
16
(-8.9)
1
(-17.2)
−11
(-23.9)
Precipitation inches (mm) 0.61
(15.5)
0.48
(12.2)
0.65
(16.5)
0.50
(12.7)
0.40
(10.2)
0.14
(3.6)
0.58
(14.7)
0.69
(17.5)
0.66
(16.8)
0.99
(25.1)
0.56
(14.2)
0.48
(12.2)
6.74
(171.2)
Snowfall inches (cm) 2.1
(5.3)
1.2
(3)
0.2
(0.5)
0
(0)
0
(0)
0
(0)
0
(0)
0
(0)
0
(0)
0
(0)
0.5
(1.3)
1.4
(3.6)
5.4
(13.7)
Avg. precipitation days (≥ 0.01 in) 4.5 4.0 5.2 3.5 3.2 1.7 4.6 5.2 4.5 4.3 3.2 3.9 47.8
Avg. snowy days (≥ 0.1 in) 0.9 0.6 0.3 0 0 0 0 0 0 0 0.2 0.6 2.6
Source: NOAA
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