Erdman Anthony is one of four consultants who were the first to begin working
with the New York State Department of Environmental Conservation (NYSDEC) Land
Surveying Standards and Procedures Manual with a Focus on Flood Protection on a
Boundary and Topographic Survey of the Lancaster Flood Control Project in Erie
County, NY. The boundary survey involves the perimeter retracement of over 250
Flood Protection Easement parcels that were appropriated in the 1940s. The
perimeter boundary totals approximately 24,000 LF.
Primary Project Control was established by GPS ties to three (3) Continually
Operating Reference Stations (CORS) and four (4) Second-Order Benchmarks. The
GPS network survey met Federal Geodetic Control Committee (FGSS) Order C2-I
standards and specifications.
After the primary control was adjusted, a secondary traverse and level run
was surveyed in conjunction with topographic cross-sections along approximately
8,500 LF of Cayuga Creek. During the topographic survey, readily visible
boundary evidence was also located for an approximate preliminary positioning of
Once research was completed at the Erie County Clerk’s Office, the written
evidence (deeds and maps) was evaluated to establish Title Identity, which is
the relationship between the easement boundary and all adjoining parcel lines
(such as senior/junior rights). The approximate boundary location was overlaid
on orthoimagery, along with geo-referenced tax map images to create a
preliminary boundary worksheet. Notes on possible boundary evidence location
were added to the worksheet to assist the field crew during boundary
Due to the numerous steps involved in the project – several of them being
critical paths – Erdman Anthony prepared a formal Work Plan to aid in project
management, and provided weekly updates to the client project manager.
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