Nutrient Review - Phosphorus and Nitrate Loading From Consented Discharges
Estimated phosphorus and nitrate loading from consented discharges for sites with a numerical limit on phosphorus (kg/yr)
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS125607
- Teitl Amgen
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- Nitrogen and Phosphorus Loading from Consented Discharges.lyr
- Laith Metadata
- English
- Datganiad
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Data was extracted from NRW’s lists of discharge consents. The lists (a static WIMS dataset from 2016 and a live PALS extract from 2022) were combined, taking the more recent data where there were multiple or conflicting sources of information. As each discharge may have multiple consent lines describing different conditions, the analysis was carried out on the assumption that each consent reference represents one discharge. Duplicate sites were then removed where appropriate. CSOs and storm overflows were removed, as the consents do not generally give a good indication of discharged flows or loadings. An initial list of all discharges with a flow consent was created. This encompassed consents with “Flow” in the description (determined and codes 6425, 3527, 7782, 6426, 9827, 9843, 7435, 37). These were calculated to generate annual flows as follows: • Dry weather flow consents were multiplied by 1.3 to estimate mean daily flow • Maximum or total daily flows were multiplied by 0.5 to estimate mean daily flow • Hourly mean or weekly flows were treated as means for those time periods, and multiplied up to estimate mean daily flow • Instantaneous maximum flow was multiplied by 0.5 to estimate mean daily flow Mean daily flow was then multiplied up to estimate total average annual flow in l/yr for each discharge. Each of these discharges were then checked for nitrogen and phosphorus consents.
- Categori pwnc
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- Environment
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
- Fformat - Math a Disgrifiad
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-
Geographic Information System
Geographic Information System
()
- Math
-
ESRI Feature Class
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Geographic Information System
Geographic Information System
()
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
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Data was extracted from NRW’s lists of discharge consents. The lists (a static WIMS dataset from 2016 and a live PALS extract from 2022) were combined, taking the more recent data where there were multiple or conflicting sources of information. As each discharge may have multiple consent lines describing different conditions, the analysis was carried out on the assumption that each consent reference represents one discharge. Duplicate sites were then removed where appropriate. CSOs and storm overflows were removed, as the consents do not generally give a good indication of discharged flows or loadings. An initial list of all discharges with a flow consent was created. This encompassed consents with “Flow” in the description (determined and codes 6425, 3527, 7782, 6426, 9827, 9843, 7435, 37). These were calculated to generate annual flows as follows: • Dry weather flow consents were multiplied by 1.3 to estimate mean daily flow • Maximum or total daily flows were multiplied by 0.5 to estimate mean daily flow • Hourly mean or weekly flows were treated as means for those time periods, and multiplied up to estimate mean daily flow • Instantaneous maximum flow was multiplied by 0.5 to estimate mean daily flow Mean daily flow was then multiplied up to estimate total average annual flow in l/yr for each discharge. Each of these discharges were then checked for nitrogen and phosphorus consents.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
- NRW Thesaurus
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- nitrates (nitrogen)
- Nitrate directive
- phosphates
- phosphorus
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2023-12-31
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
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Restriction on this data have not been fully determined, however a preliminary assessment indicate part of this dataset is sensitive, and access may be restricted under relevant legislation. NRW may NOT release, publish or disseminate the sensitive data
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
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© CNC/NRW NRW does NOT grant permission to third parties to re-use or disseminate the full dataset. Subject to a full assessment, a redacted version of the data may be re-used under provision and in line with the terms of a NRW licence.
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313235363037 XML
- Laith Metadata
- English
- Dynodydd Rhiant
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Nutrients Review 2023
NRW_DS125601
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-05-30T15:37:46.308Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
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1.0