Survey Control

Additional information can be found by clicking on features in the map. Look for the multiple feature selection indicator at the top of the info window, use the arrow to page thru feature information.



Benchmark Elevations are on City of Boulder vertical datum. Although elevations are publish to the hundredth of a foot, relative elevation accuracy is +/- 0.1 ft.
NGVD 1929 datum adjustment: COB datum is approximately 0.4 ft LOWER than NGVD 1929 datum.
FALCON 1958 contour adjustment: COB Datum is approximately 4247.18 ft HIGHER than 1958 contours.

Additional Survey Links:

City of Boulder Benchmark List

Boulder County Surveyor

Colorado Monument Records

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