Billinghay Timberland Catchment Study

Study:

Survey 269 Cross Sections including 77 Structures and 2 Pumping Stations over 51km of Internal Drainage Board watercourses in the Billinghay and Timberland catchments.

Client Requirements:

Cross Sections taken at 250m intervals or at a substantial change in profile.
Long Section describing the full extent of the maintained systems from the pumping stations.
Record all features such as culverts, gauge boards, intakes and outfalls – noting all relevant dimensions and material types.
Information recorded in such a format as to be compatible with its use to create a hydraulic model (HEC-RAS in Hard and Soft Bed Geometries).
Survey results to be provided electronically (AutoCAD).
Permanent TBMs to be established on the weedscreen decks of Timberland and Billinghay pumping stations.

Survey & Deliverables

Preparation

Significant time invested in labelling each of the 28 drains and giving each requested cross section a unique ID.
Uploading all cross section locations onto Trimble R8s GNSS Receiver.
Splitting the workload into manageble areas for each survey team.

Collecting the data

Open cross sections surveyed with GNSS Receiver due to flat, unobstructed Lincolnshire Fens.
Structures surveyed using Leica Total Station as per Environment Agency specification.
All data downloaded at the end of each day. Sections built in river survey software. Photographs referenced to unique names.
Progress reports sent to client at the end of each week. Schedule for following week included.

Processing

Watercourses processed by surveyor that collected the data to eliminate any errors.
In-house processing procedures followed to maintain consistency.
Data outputs included ISIS, HecRAS and XYZ.
Independent checking system carried out.
Deliverables produced and sent to client 2 weeks in advance of the agreed completion date.