Date (Publication)

2011-11-18

Date (Creation)

2011-08-25

Identifier

https://catalogue.ceh.ac.uk/id/cd7db09f-edf6-4b06-b878-f1be6c649e3a

Identifier

doi: / 10.5285/cd7db09f-edf6-4b06-b878-f1be6c649e3a

Other citation details

Burden, A., Norris, D.A., Evans, C.D., Grant, S.J., Williams, D., Evans, D., Callaghan, B., Pomeroy, I. (2011). Conwy Catchment - Nant Y Brwyn Discharge dataset (2008-2011). NERC Environmental Information Data Centre 10.5285/cd7db09f-edf6-4b06-b878-f1be6c649e3a

Maintenance and update frequency

annually Annually

Maintenance note

Approximately annually

GEMET - INSPIRE themes, version 1.0

• Environmental Monitoring Facilities

GEMET - Concepts, version 4.1.3

• hydrometry

GeoNames

• Wales
• United Kingdom

Keywords

• Hydrology
• Conwy Catchment

Access constraints

otherRestrictions Other restrictions

Other constraints

no limitations

Use constraints

otherRestrictions Other restrictions

Other constraints

This resource is made available under the terms of the Open Government Licence

Use constraints

otherRestrictions Other restrictions

Other constraints

© UK Centre for Ecology & Hydrology

Use constraints

otherRestrictions Other restrictions

Other constraints

If you reuse this data, you should cite: Burden, A., Norris, D.A., Evans, C.D., Grant, S.J., Williams, D., Evans, D., Callaghan, B., Pomeroy, I. (2011). Conwy Catchment - Nant Y Brwyn Discharge dataset (2008-2011). NERC Environmental Information Data Centre https://doi.org/10.5285/cd7db09f-edf6-4b06-b878-f1be6c649e3a

Spatial representation type

textTable Text, table

Metadata language

EnglishEnglish

Character set

utf8 UTF8

Topic category

• Environment
• Inland waters

Begin date

2008-03-11

End date

2011-07-14

Unique resource identifier

WGS 84

Distribution format

• Comma-separated values (CSV) ()

OnLine resource

Download the data

Get a copy of this data

OnLine resource

Supporting documents

Documents available to assist with re-use of this dataset

Hierarchy level

dataset Dataset

Other

dataset

Statement

Stage (or water depth) and temperature are measured by a Starflow Ultrasonic Doppler Instrument every 5 minutes and averaged and recorded automatically on to an integrated data logger every 15 minutes. This data is downloaded monthly on to a laptop and transferred on to the CEH shared drive which is in turn backed up each evening. The data is then integrated into a master file along with a diary entry for the visit detailing any relevant information or observations. This metadata is then used to help quality check the raw data, along with plotting the data to identify outliers that may be indicative of equipment failure. Data start/finish dates and times are checked to ensure a continuous data series or to note data gaps. A rating curve was produced by carrying out flow gauging over a wide range of stream flow conditions using a SonTek FlowTracker handheld ADV. A particular stream cross-section at the Starflow location was used consistently for these measurements. Velocity was determined at stations separated by 10 cm along the cross-section. Mean station velocity was measured at 0.6 * depth (Vmean=V0.6) and discharge calculated by the FlowTracker software using the default Mid Section discharge equation (Firmware Version 3.7). Calculated discharge was related to the Starflow measured stage averaged over the duration of the FlowTracker measurement (typically 30 to 60 minutes). The fitted regression curve indicated that discharge was exponentially related to stage for depths less than 0.267m, and followed a linear relationship for greater depths. The rating curve is then applied to the stage data to give the final discharge estimates.

File identifier

cd7db09f-edf6-4b06-b878-f1be6c649e3a XML

Metadata language

EnglishEnglish

Character set

ISO/IEC 8859-1 (also known as Latin 1) 8859 Part 1

Hierarchy level

dataset Dataset

Hierarchy level name

dataset

Date stamp

2025-11-13T16:23:27

Metadata standard name

UK GEMINI

Metadata standard version

2.3