Benchmarks Reported Missing
Control Pt IDs\Benchmarks Reported as "Missing\Destroyed" in the Field
If you know of any additional benchmarks that are possibly missing\destroyed in the field contact benchmarks@dupageco.org. If a missing benchmark listed below was located\recovered in the field, please send an email to benchmarks@dupageco.org along with a digital image of the recovered benchmark. If verified, the benchmark will be removed from the list shown below.
****Notice Benchmark Data as of: April 25, 2012****
DuPage County has upgraded its benchmark system from the North American Geodetic Vertical Datum of 1929 (NGVD29) to the North American Vertical Datum of 1988 (NAVD88).
NAVD88 Benchmarks Reported Missing:
01 Addison Township NAVD88 Benchmarks: (None Reported Missing.)
02 Bloomingdale Township NAVD88 Benchmarks:
ID #0209 Reported destroyed as of 08/02/2018
ID #0205 - Reported as destroyed on Dec. 20th 2012 \ New bridge. NOTE: This benchmark has been replaced / reset in the field. NEW ID "0205 RESET". (Vertical Order: Third.)
03 Wayne Township NAVD88 Benchmarks: (None Reported Missing.)
04 Winfield Township NAVD88 Benchmarks: (None Reported Missing.)
05 Milton Township NAVD88 Benchmarks: (None Reported Missing.)
06 York Township NAVD88 Benchmarks: (None Reported Missing.)
07 Naperville Township NAVD88 Benchmarks: (None Reported Missing.)
08 Lisle Township NAVD88 Benchmarks: (None Reported Missing.)
09 Downers Grove North Township NAVD88 Benchmarks:
ID# DGN03001 - Has been reported as destroyed.
10 Downers Grove South Township NAVD88 Benchmarks: (None Reported Missing.)
NAVD88 Benchmarks outside of DuPage County in Kane, Will and Cook County:
ID #0181 Reported To be destroyed as of 06/15/2019 - Due to construction project.