Identification

Title

Welsh Lakes Bathymetry Data

Abstract

Bathymetric data from Welsh lakes collated from documentary and electronic sources and re-formatted into a consistent and accessible form and structure. The data includes transformed raw coordinate and depth data to bathymetric surface rasters at 0.5 m interval polygon shapefiles that can be placed into GIS software with volume/depth and area/depth data for the lakes at the same 0.5 m interval. The data supplied collates existing bathymetric data to produce a GIS layers that display detailed bathymetric maps of all the Welsh lakes.

Data was collated from sources from 1902 onwards. Standardisation and statistical analysis was undertaken in 2010. Depth measurements obtained using hand held echo sounder and boat mounted systems, geographic locations obtained from original contour lake maps, approximate geographical locations and handheld GPS units to obtain accurate grid references. The confidence in this dataset is high as data collated and analysed by experienced environmental professionals however for many of the lakes the raw data may be imperfect and should be treated with caution. In some cases no bathymetric information is available (e.g. Llyn Bodlyn, Llyn Ogwen, Llyn Hesgin, Llyn Bodlyn, Llyn Du) and this information is available as spot data only.

Attribution Statement

Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Centre for Ecology & Hydrology © UKRI (CEH). © ENSIS-ECRC, University College London

Licence

Non-Commercial Government Licence for public sector information

Read more about this licence

Copyright:

None

Publication date

02 April 2024

Type

Spatial data

Category:

Inland Waters

Inland water features, drainage systems and their characteristics. Examples: rivers and glaciers, salt lakes, water utilization plans, dams, currents, floods, water quality, hydrographic charts

Find more data in this category

Regions

Global

Approved

Yes

Published

Yes

Featured

No

Group

Natural Resources Wales

Information

Spatial extent

Projection system

EPSG:27700

Extension x0

146597.199797902

Extension x1

355308.0

Extension y0

164586.296917809

Extension y1

395984.199957072

Features

Spatial Representation Type

Vector data is used to represent geographic data

Contact

Email

opendata@naturalresourceswales.gov.uk

Organisation

Natural Resources Wales

References

Link online

/layergroups/geonode:nrw_wales_lakes_bathy

Metadata page

/layergroups/geonode:nrw_wales_lakes_bathy/metadata_detail

OWS endpoints

WMS

WFS