National Geodetic Survey, Retrieval Date = APRIL 21, 2010 NY0880 *********************************************************************** NY0880 DESIGNATION - HORSEFLY LTO NY0880 PID - NY0880 NY0880 STATE/COUNTY- OR/KLAMATH NY0880 USGS QUAD - HORSEFLY MOUNTAIN (1988) NY0880 NY0880 *CURRENT SURVEY CONTROL NY0880 ___________________________________________________________________ NY0880* NAD 83(1991)- 42 15 50.96408(N) 121 02 56.00855(W) ADJUSTED NY0880* NAVD 88 - 1971.9 (meters) 6469. (feet) VERTCON NY0880 ___________________________________________________________________ NY0880 LAPLACE CORR- 4.92 (seconds) DEFLEC09 NY0880 GEOID HEIGHT- -21.80 (meters) GEOID09 NY0880 HORZ ORDER - SECOND NY0880 NY0880.The horizontal coordinates were established by classical geodetic methods NY0880.and adjusted by the National Geodetic Survey in October 1991. NY0880 NY0880.The NAVD 88 height was computed by applying the VERTCON shift value to NY0880.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) NY0880 NY0880.The Laplace correction was computed from DEFLEC09 derived deflections. NY0880 NY0880.The geoid height was determined by GEOID09. NY0880 NY0880; North East Units Scale Factor Converg. NY0880;SPC OR S - 66,520.975 1,454,712.010 MT 1.00001814 -0 22 31.9 NY0880;SPC OR S - 218,244.67 4,772,677.20 iFT 1.00001814 -0 22 31.9 NY0880;UTM 10 - 4,680,949.020 660,919.190 MT 0.99991862 +1 18 45.0 NY0880 NY0880! - Elev Factor x Scale Factor = Combined Factor NY0880!SPC OR S - 0.99969424 x 1.00001814 = 0.99971238 NY0880!UTM 10 - 0.99969424 x 0.99991862 = 0.99961289 NY0880 NY0880: Primary Azimuth Mark Grid Az NY0880:SPC OR S - IODINE 007 33 52.7 NY0880:UTM 10 - IODINE 005 52 35.8 NY0880 NY0880|---------------------------------------------------------------------| NY0880| PID Reference Object Distance Geod. Az | NY0880| dddmmss.s | NY0880| NY0878 IODINE APPROX.14.4 KM 0071120.8 | NY0880| NY0881 HORSEFLY MOUNTAIN LOOKOUT TOWER 2.627 METERS 10810 | NY0880| NY0883 HORSEFLY MOUNTIAN LOOKOUT TOWER 2.090 METERS 12745 | NY0880| CD7633 HORSEFLY RM 1 8.545 METERS 13038 | NY0880| CD7634 HORSEFLY RM 2 4.248 METERS 33010 | NY0880|---------------------------------------------------------------------| NY0880 NY0880 SUPERSEDED SURVEY CONTROL NY0880 NY0880 NAD 83(1986)- 42 15 50.96756(N) 121 02 56.00947(W) AD( ) 2 NY0880 NAD 27 - 42 15 51.42100(N) 121 02 52.06000(W) AD( ) 2 NY0880 NGVD 29 (07/19/86) 1970.7 (m) 6466. (f) VERT ANG NY0880 NY0880.Superseded values are not recommended for survey control. NY0880.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. NY0880.See file dsdata.txt to determine how the superseded data were derived. NY0880 NY0880_U.S. NATIONAL GRID SPATIAL ADDRESS: 10TFM6091980949(NAD 83) NY0880_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION NY0880_SETTING: 66 = SET IN ROCK OUTCROP NY0880 NY0880 HISTORY - Date Condition Report By NY0880 HISTORY - 1948 MONUMENTED USFS NY0880 HISTORY - 1967 SEE DESCRIPTION CGS NY0880 HISTORY - 1979 GOOD NGS NY0880 NY0880 STATION DESCRIPTION NY0880 NY0880'DESCRIBED BY US FOREST SERVICE 1948 (MTP) NY0880'THE STATION IS ABOUT 10 MILES SOUTH OF BLY, ON THE SUMMIT OF NY0880'HORSEFLY MOUNTAIN, AND IN THE NORTHWEST SECTION OF THE BASE OF NY0880'THE HORSEFLY MOUNTAIN LOOKOUT TOWER. NY0880' NY0880'THE STATION MARK, STAMPED HORSEFLY L.T.O. 1935, IS A STANDARD NY0880'U.S. FOREST SERVICE DISK SET IN AN OUTCROP, 2 FEET BY 4 FEET, NY0880'PROTRUDING 6 INCHES ABOVE THE GROUND. IT IS 2.63 METERS WEST NY0880'NORTHWEST OF THE CENTER OF THE LOOKOUT TOWER. NY0880' NY0880'REFERENCE MARK NO. 1, STAMPED HORSEFLY NO 1 1948, IS A STANDARD NY0880'USC AND GS DISK SET IN A BOULDER, 6 FEET IN DIAMETER, PROJECTING NY0880'2 FEET ON THE WEST SIDE AND 7 FEET ON THE EAST SIDE. IT IS 2.9 NY0880'METERS SOUTH OF THE SOUTHEAST LEG OF THE LOOKOUT TOWER. NY0880' NY0880'REFERENCE MARK NO. 2, STAMPED HORSEFLY NO 2 1948, IS A STANDARD NY0880'USC AND GS DISK SET IN THE SOUTH END OF A LEDGE 6 FEET IN LENGTH NY0880'AND 3 FEET IN HEIGHT. IT IS 2.5 METERS NORTH OF THE NORTHWEST NY0880'LEG OF THE LOOKOUT TOWER. NY0880' NY0880'TO REACH THE STATION FROM THE BLY HOTEL ON STATE HIGHWAY 66 IN NY0880'BLY GO SOUTH, AS PER SIGN TO BARNES VALLEY, FOR 1.1 MILES TO A NY0880'FORK. TAKE THE LEFT FORK AND CONTINUE SOUTHERLY ON FOREST SERVICE NY0880'ROAD LEADING ALONG TELEPHONE LINE (ACROSS SEVERAL CROSS ROADS) NY0880'FOR 6.4 MILES TO A CROSS ROAD. CONTINUE STRAIGHT AHEAD 0.3 MILE NY0880'TO A FORK. TAKE THE LEFT FORK AND CONTINUE 2.9 MILES TO A NY0880'FORK. TAKE THE RIGHT FORK AND CONTINUE 2.9 MILES TO A FORK. NY0880'TAKE THE RIGHT FORK AND CONTINUE 2.1 MILES TO THE HORSEFLY NY0880'MOUNTAIN LOOKOUT TOWER AND THE STATION SITE. NY0880 NY0880 STATION RECOVERY (1967) NY0880 NY0880'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967 (HJS) NY0880'THE STATION MARK, STAMPED HORSEFLY LTO 1935, REFERENCE MARK NO. 1, NY0880'STAMPED HORSEFLY NO 1 1948 AND REFERENCE MARK NO. 2, STAMPED NY0880'HORSEFLY NO 2 1948 WERE RECOVERED AS DESCRIBED. THE FOLLOWING NY0880'IS AN ALTERNATE TO REACH. NY0880' NY0880'TO REACH THE STATION FROM THE POST OFFICE IN BLY GO SOUTHEAST NY0880'ON STATE HIGHWAY 140 FOR 0.1 MILE TO A CROSSROAD, TURN RIGHT AND NY0880'GO SOUTH ON FOREST SERVICE ROAD 375 FOR 8.4 MILES TO A FORK AND NY0880'JUNCTION WITH FOREST SERVICE ROAD 381, TAKE THE RIGHT FORK, ROAD NY0880'381, AND GO SOUTH FOR 2.8 MILES TO THE JUNCTION WITH FOREST NY0880'SERVICE ROAD 3815, AT THE SIGN, HORSEFLY L. O. 4, TURN LEFT AND GO NY0880'SOUTHEAST FOR 3.3 MILES TO THE LOOKOUT AND STATION. NY0880 NY0880 STATION RECOVERY (1979) NY0880 NY0880'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 (CLN) NY0880'THE STATION, REFERENCE MARK 1 AND 2, WERE RECOVERED IN GOOD NY0880'CONDITION. THE 1967 RECOVERY NOTE IS ADEQUATE FOR RECOVERY. THERE NY0880'IS A LOOKOUT TOWER OVER THE MARK BUT THERE IS A 1.77 FOOT DIFFERENCE NY0880'IN THE 1948 OBSERVATIONS AND THE 1979 OBSERVATIONS. THE DISTANCES NY0880'TO THE REFERENCE MARKS COMPARE FAVORABLY. ITS POSSIBLE THE LOOKOUT NY0880'HAS BEEN REBUILT IN THE APPROXIMATE SAME POSITION. THE FIRST STEP NY0880'LEADING UP THE TOWER IS OVER THE MARK AND THE ROOF IS NOT PEAKED BUT NY0880'RELATIVELY FLAT. NO ONE AT THE U.S.F.S. OFFICE COULD CONFIRM THAT NY0880'IT HAD BEEN REBUILT. NY0880' NY0880'THE STATION IS LOCATED ON HORSEFLY MOUNTAIN ABOUT 10 MILES SOUTH OF NY0880'BLY. NY0880' NY0880'THE STATION IS U.S.F.S. DISK STAMPED---HORSEFLY LTO 1935---SET INTO A NY0880'DRILL HOLE IN A ROCK OUTCROP. IT IS UNDER THE FIRST STEP OF THE NY0880'TOWER. IT IS LOCATED 1.72 METERS (5.6 FEET) E FROM THE WESTERN MOST NY0880'LEG OF THE LOOKOUT TOWER. NY0880' NY0880'REFERENCE MARK NO. 1 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW NY0880'NOS) DISK STAMPED---HORSEFLY NO 1 1948---SET INTO THE TOP OF A NY0880'BOULDER OF 25 METERS (82 FEET) LARGEST DIMENSION LOCATED 3.0 METERS NY0880'(10 FEET) SSE FROM THE EASTERN MOST LEG OF THE TWR AND 0.3 METER (1 NY0880'FOOT) HIGHER THAN THE STATION. NY0880' NY0880'REFERENCE MARK NO. 2 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW NY0880'NOS) DISK STAMPED---HORSEFLY NO 2 1948---SET INTO ROCK OUTCROP NY0880'LOCATED 3.3 METERS (11 FEET) N FROM THE WESTERNMOST LEG OF THE TWR NY0880'AND 0.3 METER (1 FOOT) LOWER THAN THE STATION.