Details for Benchmark: TO1112
N 48° 46.373 W 116° 46.161 (NAD 83)
Coordinates may not be exact. Altitude is VERTCON and location is ADJUSTED. (more info)
- In BOUNDARY county, ID View Original Datasheet
- Marker Type:
- NGS Benchmark
- setting not listed - see description
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||cachervanbeethoven found TO1112
Found this on our hike to Lookout Mountain.
Reference Mark 2
||Wiildrose found TO1112
Found it in excellent shape, top of Lookout Mt, between the 2 lookouts. There are actually 3 separate markers here, within about 5' of each other. LO, LO1 & LO2. Will upload photos when I get them onto the computer.
||bbridges found TO1112
Found the station mark and reference mark #1 today at the summit of Lookout Mountain. Not much to add beyond Moun10Bike's log, other than that the old lookout tower has received a fresh coat of paint and now says it's on the national register of historic places (see photo)!
[Photos:]Restored old lookout tower
||Moun10Bike found TO1112
I located this benchmark at the summit of Lookout Mountain while placing a geocache in the area (see GC77D9, (visit link) The benchmark is in excellent condition, as are the two nearby reference marks.
Of interest at this location are the two nearby lookouts. The first is an historical lookout erected in 1929 by the Forest Service, while the second is a new tower built by the Idaho Department of Lands in 1977. The old tower is currently in the process of being restored, an effort that could place it on the National Register of Historic Places.
The view from this spot is spectacular, and the ranger in the new tower was very friendly and invited us up for an even better view.
[Photos:]Photo of the benchmark
Photo of reference mark 1
Photo of reference mark 2
View to the north from the benchmark
The old lookout
Located near the benchmark, this lookout was built in 1929.
View to the east from the benchmark
The dramatic granite formation seen is called the Lions Head.
View to the southwest from the benchmark
Priest Lake is visible below.
View to the south from the benchmark
The tall, thin outcropping barely visible in the distance is Chimney Rock. To its immediate right are the twin summits of Mount Roothaan.
Documented History (by the NGS)
|1/1/1964 by CGS (MONUMENTED)
|DESCRIBED BY COAST AND GEODETIC SURVEY 1964 (JCC)
THE STATION IS ABOUT 20 MILES SOUTHWEST OF PORTHILL, 21 MILES WEST-NORTHWEST OF BONNERS FERRY, ON THE SUMMIT OF LOOKOUT MOUNTAIN AND AT THE SITE OF A LOOKOUT TOWER AND A LOOKOUT HOUSE, BOTH OF THESE STRUCTURES WILL BE DISMANTLED IN THE VERY NEAR FUTURE.
THIS STATION WAS REACHED BY HELICOPTER.
THE STATION MARK IS A STANDARD DISK, STAMPED LOOKOUT 1964, CEMENTED IN A DRILL HOLE IN A 2-1/2 BY 3 FEET ROCK OUTCROP PROJECTING 3 INCHES. IT IS ABOUT 40 FEET SOUTHWEST AND ABOUT 5 FEET LOWER THAN THE HIGHEST POINT, 24.5 FEET NORTHEAST OF THE NORTHWEST CONCRETE FOOTING OF THE LOOKOUT TOWER AND 21.3 FEET NORTHWEST OF THE SOUTHEAST CONCRETE FOOTING.
REFERENCE MARK 1 IS A STANDARD DISK, STAMPED LOOKOUT NO 1 1964, CEMENTED IN A DRILL HOLE IN THE TOP OF A 4 BY 6 FOOT BOULDER PROJECTING 3 FEET. IT IS ABOUT 3 FEET HIGHER IN ELEVATION THAN THE STATION.
REFERENCE MARK 2 IS A STANDARD DISK, STAMPED LOOKOUT NO 2 1964, CEMENTED IN A DRILL HOLE IN A 3 BY 4 FOOT ROCK OUTCROP PROJECTING 6 INCHES. IT IS ABOUT 2 FEET LOWER IN ELEVATION THAN THE STATION.
THE AZIMUTH MARK IS A STANDARD DISK, STAMPED LOOKOUT 1964, CEMENTED IN A DRILL HOLE IN THE TOP OF A 5 BY 7 FOOT BOULDER PROJECTING 3 FEET. IT IS ABOUT 12 FEET WEST OF THE EAST EDGE OF A CLIFF, 2.0 FEET EAST OF A CAIRN AND ABOUT 100 FEET LOWER IN ELEVATION THAN THE STATION.
|1/1/1967 by USGS (GOOD)
|RECOVERY NOTE BY US GEOLOGICAL SURVEY 1967
REACHED BY HELICOPTER.
STATION CAN BE REACHED VIA LOGGING RDS. ON NW. SLOPE OF LOOKOUT MOUNTAIN TO END OF TRUCK TRAVEL, THENCE CROSS COUNTRY TO TOP OF THE SW. BEARING RIDGE. ON TOP OF RIDGE AN OLD ABANDONED FOREST SERVICE TRAIL BEARS E. TO TOP AND STATION.
STATION MARK--STANDARD DISK STAMPED---LOOKOUT 1964---, CEMENTED IN A DRILL HOLE IN A 2-1/2 BY 3 FT. ROCK OUTCROP PROJECTING 3 IN.
- The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in July 1992.
- The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
- The Laplace correction was computed from DEFLEC99 derived deflections.
- The geoid height was determined by GEOID99.