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Details for Benchmark: TP1187

N 48° 44.585 W 119° 37.340 (NAD 83)

Altitude: 5173.4

Coordinates may not be exact. Altitude is VERTCON and location is ADJUSTED. (more info)

Location:
In OKANOGAN county, WA View Original Datasheet
Designation:
LEMANASKY
Marker Type:
survey disk
Setting:
in rock outcrop
Stability:
Most reliable and expected to hold position/elevation well.

Reference Points

Must Read!

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A nice walk up a gated road. No one at the lookout today.

[Photos:]
photoLemansky Lookout BM
photoLemansky RM #2

I was the lookout here for 9 summers from 1993-2001. Looked at the marker every time I took weather readings from the adjacent weather station.

[Photos:]
photoLemanasky

Documented History (by the NGS)

01/01/1924 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1924 (PCD) ABOUT 9 MILES NORTHWEST OF TONASKET AND 5 MILES SOUTH OF LOOMIS, AIRLINE, ON THE TOP OF LEMANASKY MOUNTAIN LOCALLY KNOWN AS AENEAS MOUNTAIN. TO REACH FROM TONASKET, 15 MILES BY ROAD AND 1/2 MILE BY TRAIL, GO WEST ACROSS THE BRIDGE AT TONASKET AND THEN SOUTH 0.6 MILE TO RIGHT HAND TURN, TAKE RIGHT TURN AND FOLLOW MAIN ROAD AND TELEPHONE LINE 4.9 MILES TO LEFT TURN, TAKE LEFT TURN AND FOLLOW 3.4 MILES AROUND BIG SOUTH BEND IN ROAD AND ON TO ANOTHER LEFT TURN JUST BEYOND A BIG RANCH AT THE LEFT, TAKE LEFT TURN, AS THE ONE STRAIGHT AHEAD GOES TO LOOMIS, AND FOLLOW 2.2 MILES AND TAKE RIGHT FORK, THEN FOLLOW 1.4 MILES UP A BIG HILL AND TAKE RIGHT FORK, PASS A LAKE ON LEFT AND A YELLOW HOUSE, THEN GO STRAIGHT AHEAD THROUGH A GATE AND TAKE THE RIGHT FORK WHICH LEADS AROUND A FIELD, FOLLOW THIS 0.6 MILE TO THE FRANK WINGO RANCH, PASS THROUGH BARNYARD AND OUT NORTH GATE, THE ROAD SWINGS TO THE RIGHT THROUGH ASPEN THICKET NORTH OF THE HOUSE, FOLLOW 0.5 MILE AND TURN TO RIGHT ABOUT 100 YARDS EAST OF A CABIN, FOLLOW UNTIL OLD CAVED-IN CABIN IS REACHED, SWING AROUND WEST SIDE OF IT AND CROSS THE FIELD BEYOND. LEAVE TRUCK HERE. STATION IS ABOUT A 45 MINUTE PACK IN A NORTHWESTERLY DIRECTION. TO REACH FROM LOOMIS, GO OUT THE OROVILLE ROAD 1.8 MILES AND TAKE THE RIGHT FORK UP HILL, FOLLOW 1.4 MILES AND TAKE RIGHT FORK, FOLLOW 5.8 MILES AND GO STRAIGHT AHEAD WHERE ROAD TURNS LEFT, GO 1.6 MILES AND TURN RIGHT AT A BIG RANCH, FROM THIS POINT FOLLOW THE DESCRIPTION AS GIVEN ABOVE. TO REACH FROM LOOMIS WITH HORSES GO SOUTH ALONG THE CONCONULLY ROAD ABOUT 2-1/2 TO 3 MILES TO A POINT WHERE THE TELEPHONE LINE TO LOOKOUT STATION ON AENEAS MOUNTAIN TURNS TO THE EAST, GO ACROSS FIELD UP TO THE IRRIGATION DITCH, FOLLOW THIS DITCH SOUTH TO WHERE TRAIL SWITCHES UP SIDE OF THE HILL THEN FOLLOW THIS TRAIL AND TELEPHONE LINE TO THE TOP. HORSES CAN BE TAKEN TO THE TOP. MAIL AND SUPPLIES AT LOOMIS. SURFACE AND REFERENCE (NO.1) MARKS ARE STANDARD BRONZE DISKS SET IN OUTCROPPING BEDROCK. REFERENCE MARK NO.2 IS A STANDARD BRONZE DISK IN A SOLID BOULDER.
01/01/1925 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1925 (WHB) RECOVERED AS DESCRIBED.
01/01/1956 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1956 STATION RECOVERED IN GOOD CONDITION. TO REACH THE STATION FROM THE POST OFFICE IN OMAK, GO N ON U.S. HIGHWAY 97 FOR 13.0 MI. TO A T-ROAD. TURN LEFT ON A PAVED ROAD FOR 1.6 MI. TO A ROAD FORK AND SIGN AENEAS LOOKOUT. TAKE THE RIGHT FORK FOR 5.1 MI. TO A ROAD FORK AND SIGN AENEAS LOOKOUT. TAKE THE LEFT FORK FOR 0.5 MI. TO A Y-ROAD AND SIGN AENEAS LOOKOUT. CONTINUE STRAIGHT AHEAD FOR 1.3 MI. TO A ROAD FORK AND SIGN AENEAS LOOKOUT. TAKE THE RIGHT FORK FOR 0.8 MI. TO A ROAD FORK AND SIGN G. VANDERSHELDEN. CONTINUE STRAIGHT AHEAD FOR 4.6 MI. TO A Y-ROAD AND SIGN AENEAS LOOKOUT. CONTINUE STRAIGHT AHEAD FOR 0.3 MI. TO A Y-ROAD AND SIGN AENEAS LOOKOUT. TAKE THE LEFT FORK FOR 0.6 MI. TO A POLE GATE. CONTINUE FOR 0.3 MI. TO A WIRE GATE. CONTINUE FOR 0.8 MI. TO THE TOP AND THE STATION.
01/01/1958 by BPA (GOOD)
RECOVERY NOTE BY BONNEVILLE POWER ADMINISTRATION 1958 TO REACH THE STATION FROM THE BRIDGE ACROSS THE OKANOGAN RIVER IN TONASKET, GO S ON AN OILED ROAD ALONG THE W BANK OF THE RIVER FOR 0.7 MI. TO A SIDE ROAD RIGHT. TURN RIGHT (W) ON THE OILED ROAD AND GO 2.7 MI. TO WHERE THE OILED ROAD TURNS LEFT (S). (SIGNS PINE CR. S. TONASKET E. LOOMIS W.) GO STRAIGHT AHEAD (W) ON LOOMIS ROAD (GRAVEL) GOING W AND N FOR 1.9 MI. TO A SIDE ROAD LEFT. (SIGN AENEAS L.O. W. LOOMIS N.) TURN LEFT (W) AND GO 2.5 MI. TO A FORK. (SIGN AENEAS L.O. RT. PINE CR. LT. AND TONASKET E.) TURN RIGHT ON THE L.O. ROAD AND GO NW FOR 1.2 MI. TO A SIDE ROAD LEFT. KEEP STRAIGHT AHEAD FOR 0.6 MI. TO A FORK. (SIGN CLARENCE CAMPBELL LT.) KEEP TO THE RIGHT AND CONTINUE NW FOR 2.5 MI. TO A FORK. TAKE THE RIGHT FORK AND GO 0.5 MI. TO ANOTHER FORK. (SIGN AENEAS L.O. RT. FISH LAKE LT. AND TONASKET BACK.) TAKE THE RIGHT FORK AND GO 0.4 MI. TO A GATE AND ANOTHER FORK JUST AFTER PASSING THROUGH THE GATE. TAKE THE LEFT FORK AND GO 0.7 MI. TO ANOTHER GATE (OLD BUILDINGS ON THE LEFT). PASS THROUGH THE GATE AND GO 0.4 MI. TO A FORK (AFTER PASSING ANOTHER GATE). TAKE THE LEFT FORK AND GO 0.5 MI. TO A GATE NEAR THE 1/4 CORNER SECTIONS 1 AND 6, T27N, R25 AND 26E, PASS THROUGH THE GATE AND GO 1.0 MI. TO THE LOOKOUT AND THE STATION. STATION IS APPROXIMATELY 25 FT. FROM THE CENTER OF THE LOOKOUT.
01/01/1974 by BPA (GOOD)
RECOVERY NOTE BY BONNEVILLE POWER ADMINISTRATION 1974 (DL) LEMANSKY 1924 GOOD - RMS AND OTHER MARKS NOT SEARCHED FOR BECAUSE OF DEEP SNOW. STATION REACHED BY TRACKSTER. LOOKOUT TOWER REBUILT IN 1958. STATION IS 18 FEET SOUTH OF S.W. LOOKOUT TOWER LEG, 1.5 FEET NORTH OF 4-FOOT HIGH ROCK AND CONCRETE WEATHER INSTRUMENT STAND, 11 FEET EAST OF SMALL ROCK AND CONCRETE CAIRN.
01/01/1986 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 (DAW) THE STATION WAS RECOVERED AT THIS DATE. REFERENCE MARK 2 AND THE USGS BM WERE RECOVERED IN GOOD CONDITION, REFERENCE MARK 1 WAS SEARCHED FOR BUT NOT FOUND, A CABLE HAS BEEN ANCHORED IN THE VICINITY OF THE MARK. THE DISTANCES AND DIRECTION TO THE MARKS WAS NOT CHECKED AT THIS DATE. A NEW DESCRIPTION FOLLOWS. THE STATION IS LOCATED ABOUT 38.6 KM (24 MI) NORTH OF OMAK, 29 KM (18 MI) SOUTH OF THE CANADIAN BORDER, 14.5 KM (9 MI) NORTHWEST OF TONASKET, ON THE SUMMIT OF A PEAK LOCALLY KNOWN AS AENEAS MOUNTAIN. THE PROPERTY IS CONTROLLED BY THE WASHINGTON DEPARTMENT OF NATURAL RESOURCES. A KEY CAN BE OBTAINED FROM THEIR OFFICE IN TONASKET. TO REACH THE STATION FROM THE POST OFFICE IN TONASKET GO NORTH FOR 0.16 KM (0.1 MI) TO THE INTERSECTION OF FOURTH STREET. TURN LEFT AND GO WEST ON FOURTH STREET, CROSSING THE OKANOGAN RIVER, FOR 0.48 KM (0.3 MI) TO A T-INTERSECTION. TURN LEFT AND GO SOUTH ON THE SURFACED ROAD FOR 0.80 KM (0.5 MI) TO A FORK. TAKE THE RIGHT FORK AND GO WESTERLY AS PER SIGN, AENEAS LOOKOUT, FOR 4.75 KM (2.95 MI) TO A SIDE ROAD RIGHT. TURN RIGHT AND GO WEST AND NORTH ON THE GRAVELED ROAD FOR 2.9 KM (1.8 MI) TO A SIDE ROAD LEFT. TURN LEFT AND GO WEST ON THE GRAVELED ROAD FOR 11.99 KM (7.45 MI) TO A LOCKED GATE. THE KEY CAN BE OBTAINED FOR THE WASHINGTON STATE DEPARTMENT OF NATURAL RESOURCES OFFICE IN TONMASKET. PASS THROUGH THE GATE AND CONTINUE UPHILL ON THE MAIN ROAD FOR 2.74 KM (1.7 MI) TO THE SUMMIT, THE LOOKOUT TOWER AND THE STATION. THE STATION MARK IS A STANDARD C+GS DISK STAMPED---LEMANASKY 1924--- SET IN A DRILLHOLE IN OUTCROPING BEDROCK THAT IS EXPOSED 0.9 M (3 FT) IN THE LARGEST DIMENSION. IT IS 7.6 M (25 FT) SOUTHWEST OF THE SOUTHEAST LEG OF THE LOOKOUT TOWER, 5.5 M (18 FT) SOUTH OF THE SOUTHWEST LEG OF THE LOOKOUT TOWER AND 0.6 M (2 FT) NORTH OF A ROCK MONUMENT. REFERENCE MARK NO. 2 IS A STANDARD C AND GS DISK STAMPED---LEMANASKY NO 2 1924---SET IN A DRILLHOLE IN A BOULDER THAT IS 1.2 M (4 FT) IN THE LARGEST DIMENSION. IT IS 11 M (36 FT) SOUTHWEST OF A ROCK MONUMENT AND 4.8 M (16 FT) EAST OF THE SOUTHEAST LEG OF THE LOOKOUT TOWER. THIS STATION IS SUITABLE FOR GPS OBSERVATIONS. DESCRIBED BY DA WEGENAST.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in December 1991.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The X, Y, and Z were computed from the position and the ellipsoidal ht.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.
  • The geoid height was determined by GEOID99.