Designing Buildings at 10:43, 2 December 2022

2022-12-02T10:43:29Z

← Older revision		Revision as of 10:43, 2 December 2022
Line 7:		Line 7:
	* Aquitard.		* Aquitard.
	* Chalk aquifer.		* Chalk aquifer.
−	* Drainage.
−	* Flood.
−	* Flood and water management act.
−	* Flood risk.
	* Groundwater.		* Groundwater.
	* Groundwater control in urban areas.		* Groundwater control in urban areas.
	* Pumps and dewatering equipment.		* Pumps and dewatering equipment.
		+	* Secondary aquifer.
	* Water Act 2014.		* Water Act 2014.
	* Water engineering.		* Water engineering.

Designing Buildings: Created page with "[https://www.gov.uk/government/publications/glossary-abbreviations-and-references High Speed Rail (Crewe – Manchester) Environmental Statement, Glossary, abbreviations and refe..."

2022-11-24T08:29:35Z

Created page with "[https://www.gov.uk/government/publications/glossary-abbreviations-and-references High Speed Rail (Crewe – Manchester) Environmental Statement, Glossary, abbreviations and refe..."

New page

[https://www.gov.uk/government/publications/glossary-abbreviations-and-references High Speed Rail (Crewe – Manchester) Environmental Statement, Glossary, abbreviations and references], published by the Department for Transport in 2022, defines a principal aquifer as: ‘A subsurface layer or layers of rock or other geological strata of sufficient porosity and permeability to allow either a significant flow of groundwater or the abstraction of significant quantities of groundwater. These are layers of rock or drift deposits that have high intergranular and/or fracture permeability, meaning they usually provide a high level of water storage and transmission. They may support water supply and/or river base flow on a strategic scale and are considered by the Environment Agency to be critical to existing or future water supplies. In most cases, Principal aquifers are aquifers previously designated as major aquifers.’

= Related articles on Designing Buildings =

* High Speed 2 (HS2).
* Aquifer.
* Aquitard.
* Chalk aquifer.
* Drainage.
* Flood.
* Flood and water management act.
* Flood risk.
* Groundwater.
* Groundwater control in urban areas.
* Pumps and dewatering equipment.
* Water Act 2014.
* Water engineering.
* Watercourse.
* Water framework directive.
* Water management.
* Water table.

[[Category:DCN_Definition]] [[Category:Definitions]] [[Category:Water]]

Principal aquifer - Revision history

Designing Buildings at 10:43, 2 December 2022

Designing Buildings: Created page with "[https://www.gov.uk/government/publications/glossary-abbreviations-and-references High Speed Rail (Crewe – Manchester) Environmental Statement, Glossary, abbreviations and refe..."