US FOREST SERVICE

CLACKAMAS GPS TEST NETWORK

MT. HOOD NATIONAL FOREST, NW OREGON


COORDINATES:

State Plane Coordinates | Geographic Coordinates NAD 83(91)

NAD83(91) 3601 Oregon North |

Pt.    	Northing     	Easting        	|         Latitude         	 Longitude
        

Name (Meters) (Meters) | (Degrees) (Degrees)

_______________________________________________________________________________

GPS-A 149369.51 2390269.92 45 0 8.5072 N 121 53 31.0326 W

1 149434.14 2390330.18 45 0 10.6342 N 121 53 28.3321 W

2 149537.61 2390285.52 45 0 13.9609 N 121 53 30.4526 W

2A 149549.21 2390209.46 45 0 14.2945 N 121 53 33.9346 W

2B 149595.22 2390322.84 45 0 15.8481 N 121 53 28.7939 W

3 149605.81 2390241.10 45 0 16.1454 N 121 53 32.5345 W

3A 149586.48 2390170.77 45 0 15.4799 N 121 53 35.7305 W

3B 149655.14 2390293.25 45 0 17.7724 N 121 53 30.1921 W

4 149680.02 2390174.24 45 0 18.5119 N 121 53 35.6457 W

4A 149649.37 2390128.20 45 0 17.4932 N 121 53 37.7237 W

4B 149693.97 2390261.40 45 0 19.0123 N 121 53 31.6769 W

5 149736.51 2390149.99 45 0 20.3281 N 121 53 36.7974 W

5A 149710.67 2390101.05 45 0 19.4639 N 121 53 39.0117 W

6 149802.11 2390120.08 45 0 22.4363 N 121 53 38.2148 W

7 149816.42 2390037.54 45 0 22.8539 N 121 53 41.9950 W Coordinates in NAD83(91) UTM Zone 10, Units = METERS PT East North 2 587337.83 4983978.53 2A 587261.46 4983987.78 2B 587373.34 4984037.26 3 587291.33 4984045.31 3A 587221.64 4984023.82 3B 587341.92 4984096.22 4 587222.22 4984117.41 4A 587177.16 4984085.35 4B 587308.89 4984134.04 5 587196.25 4984173.11 5A 587148.14 4984145.78 6 587164.33 4984237.74 7 587081.40 4984249.49

Note that Points GPS-A and 1 are for survey control only and are not used as part of the test network.

AREA TEST LOOPS:

The points in the testnet can also be subdivided into several areas as described below:

Area          Acres          Points

Loop A 2.190 2, 2B, 3B, 3, 3A, & 2A Loop B 4.870 2, 2B, 3B, 4B, 4, 4A, 3A, & 2A. Loop C 5.740 2, 2B, 3B, 4B, 4, 5, 5A, 4A, 3A, & 2A Loop D 7.200 2, 2B, 3B, 4B, 4, 5, 6, 7, 5A, 4A, 3A, & 2A. Loop E 2.330 5, 6, 7, & 5A.

Other Known Coordinates in the area: see www.ngs.noaa.gov search datasheets for Station "Estacada" and the following: |Dist|PID...|H V|Vert_Source|Approx.|Approx..|Stab|Designation |----|------|- -|-----------|-------|--------|----|----------- | 9.8|AJ8163|B .|88/GPS OBS.|N450456|W1220315|C...|CHASE | 4.7|AJ8170|B .|88/GPS OBS.|N445846|W1215856|C...|DEX |13.1|AJ8173|B .|88/GPS OBS.|N444835|W1215252|C...|G SMITH |11.1|AJ8174|B .|88/GPS OBS.|N450941|W1215339|C...|HAMMERSTAD |10.1|AJ8188|B .|88/GPS OBS.|N445233|W1214654|C...|MARING |10.9|AJ8205|B 3|88/LEVELING|N450638|W1214400|C...|WU | 5.2|AJ8206|B .|88/GPS OBS.|N445915|W1214716|C...|WYDEN


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