River Habitat Survey - Survey Details and Summary Results
This record is for Approval for Access product AfA434. "River Habitat Survey (RHS) is the Environment Agency standard for collecting data on the physical character and quality of river habitats across the UK. This dataset provides survey details and summary results for river habitat surveys carried out from 1994 to present. This dataset is a subset of AfA286 River Habitat Survey. Since 1994 approximately 19,000 surveys have been carried out in England. The bulk of surveys were carried out between 1994 to 1997 and 2006 to 2008. Surveys are still carried out for specific drivers, for example assessing habitat availability and Water Framework Directive. For further information on the survey methodology the RHS manual can be downloaded from www.gov.uk. Surveys conducted prior to 2003 should not be compared with surveys conducted after 2003 as survey methodology changed significantly in 2003. River names may be in English, Welsh or Gaelic. This dataset no longer contains data owned by Natural Resources Wales (NRW). To request data that relates to Wales please contact NRW. Dimensions are intended to provide context for these habitat surveys. They should not be used for other purposes. The following information has been excluded from the survey data supplied to you because there is a risk that we might be disclosing personal data. If a customer has a particular interest in a particular site/survey examples of the type of information we may be able supply are: • General description of the survey • Surveyors name • Weirs/sluices, culverts, outfalls/intakes, dams, abstractions, hydroelectric power • Where channel is choked by vegetation or a debris dam impeding flow • Tipped materials and landfill • Presence of sewage and pollution • Gravel extraction Please note: We have discovered some errors in the HQA in-stream channel vegetation sub-score and the HMS Culverts sub score that users of our data need to be aware of: 1. In-stream channel vegetation HQA sub-score: This error has now been fixed - all surveys carried out after 12/07/2017 will be correct. However, stored, historic calculations are not automatically updated. The error only applies under certain criteria (where present or extensive is entered in Spot-check 11, but spot-check’s 1-10 are not listed as present or extensive for the same vegetation category) and will only affect the HQA sub-score by a few points. 2. 1994 surveys - In-stream channel vegetation HQA sub-score (Submerged vegetation). No fix in place – all recorded submerged vegetation category entries are excluded from any 1994 surveys. This error will only impact the HQA scores by 1-2 points 3. HMS Culvert Score error. No fix in place. This error affects sites where a culvert is recorded in a spotcheck(s) and Bank Material, Bank modification and channel substrate are not listed as NK or NV. This can affect the scores on a much larger scale as our database is failing to add on 50 points per culverted spot-check, that fulfil these criteria. Attribution statement: © Environment Agency copyright and/or database right 2019. All rights reserved.
dataset
https://environment.data.gov.uk/datafiles/b82d3ef3750d49f6917fff02b9341d68
protocol: WWW:LINK-1.0-http--link
name: Data_download_link
description: Data download link
https://support.environment.data.gov.uk/hc/en-gb
protocol: http:
name: DSP_CUSTOMER_FORUM
description: DEFRA Data Services Platform Customer Forum
6d51f2ae-d465-11e4-b4b5-f0def148f590
eng
http://www.opengis.net/def/crs/EPSG/0/27700
habitat
river channelling
riverside vegetation
OpenData
publication
2010-01-13
-6.236
2.072
55.816
49.943
http://data.ordnancesurvey.co.uk/doc/country/england
http://data.ordnancesurvey.co.uk/doc/country/wales
1994-04-01
2020-11-19
creation
1994-01-01
revision
2020-11-16
annually
Standard River Habitat Surveys (RHS) are carried out along 500m stretched of river. 50m spots checks are conducted to record survey details. Surveys are held in ECOSYS and are extracted on an ad hoc basis - these data are not stored as a standalone dataset. Survey Details and Summary Results are a subset of the RHS data and include details on discrete surveys and a summary of the survey results.
Proprietary format | MS Excel (XLS)
Unknown
Open Government Licence
There are no public access constraints to this data. Use of this data is subject to the licence identified.
Environment Agency
DSPcustomerforum@environment-agency.gov.uk
https://support.environment.data.gov.uk/hc/en-gb
description: Defra Data Services Forum
pointOfContact
Environment Agency
metadata@environment-agency.gov.uk
pointOfContact
2020-11-25