Implementing the Water Environment and Water Services (Scotland) Act 2003: Development of environmental standards and conditions limits

Implementing the Water Environment and Water Services (Scotland) Act 2003: Development of environmental standards and conditions limits - phase II: A Consultation

Additions to Table 11 of Part B of Schedule 1 to the 2007 Directions

Table 11(a): Environmental standards for moderate river flows

Column 1	Column 2	Column 3	Column 4	Column 5
	permitted abstraction per day as a proportion of natural flow
	Moderate
River type	Maximum volume of water removed per day at daily flows = Qn ₆₀	Maximum volume of water removed per day at daily flows < Qn ₆₀ and = Qn ₇₀	Maximum volume of water removed per day at daily flows < Qn ₇₀ and = Qn ₉₅	Maximum volume of water removed per day at daily flows < Qn ₉₅
A1	60 % of daily Q _n	55 % of daily Q _n	50 % of daily Q _n	45 % of Q _n95
A2 (downstream), B1, B2, C1, D1	55 % of daily Q _n	50 % of daily Q _n	45 % of daily Q _n	40 % of Q _n95
A2 (headwaters), C2, D2	50 % of daily Q _n	45 % of daily Q _n	40 % of daily Q _n	35 % of Q _n95

Table 11(b): Environmental standards for poor river flows

Column 1	Column 2	Column 3	Column 4	Column 5
	permitted abstraction per day as a proportion of natural flow
	Poor
River type	Maximum volume of water removed per day at daily flows = Qn ₆₀	Maximum volume of water removed per day at daily flows < Qn ₆₀ and = Qn ₇₀	Maximum volume of water removed per day at daily flows < Qn ₇₀ and = Qn ₉₅	Maximum volume of water removed per day at daily flows < Qn ₉₅
A1	85 % of daily Q _n	80 % of daily Q _n	75 % of daily Q _n	70 % of Q _n95
A2 (downstream), B1, B2, C1, D1	80 % of daily Q _n	75 % of daily Q _n	70 % of daily Q _n	65 % of Q _n95
A2 (headwaters), C2, D2	75 % of daily Q _n	70 % of daily Q _n	65 % of daily Q _n	60 % of Q _n95

Additions to Table 15 of Part B of Schedule 1 to the 2007 Directions

Table 15(a): Environmental standards for inland loch water levels

permitted percentage change in any day to the loch's total natural daily outflow volume (i)
Moderate
Column 1	Column 2	col 3		col 4		col 5	col 6		col 7	col 8		col 9			col 10		col 11		col 12		col 13	col 14
Geology	Altitude	Low							Mid								High
	Size	Small			Large				Small				Large				Small				Large
	Basin form	L		V	L			V	L		V		L		V		L	V			L	V
	Depth ¹¹
Peat	Shallow or deep	40	40			40	35		40	40		40		35		40		40		40			35
Peat	Very shallow	40	35			35	35		40	35		35		35		40		35		35			35
Low Alkalinity	Shallow or deep	55	50			50	50		55	50		50		50		55		50		50			50
Low Alkalinity	Very shallow	50	50			50	50		50	50		50		50		50		50		50			50
Medium Alkalinity	Shallow or deep	45	45			45	45		45	45		45		45		45		45		45			45
Medium Alkalinity	Very shallow	45	45			45	40		45	45		45		40		45		45		45			40
High Alkalinity, Marl	Shallow or deep	55	50			50	50		55	50		50		50		55		50		50			50
High Alkalinity, Marl	Very shallow	50	50			50	50		50	50		50		50		50		50		50			50
Brackish	Shallow or deep	55	50			50	50		55	50		50		50		50		50		50			50
Brackish	Very shallow	50	50			50	50		50	50		50		50		50		50		50			50

Note to Table 15(a):

On days where the natural outflow volume is < Q _n95, the standards refer to a percentage of the Q _n95 outflow volume.

Additions to Table 15 of Part B of Schedule 1 to the 2007 Directions

Table 15(b): Environmental standards for inland loch water levels

permitted percentage change in any day to the loch's total natural daily outflow volume (i)
Poor
Column 1	Column 2	col 3		col 4		col 5	col 6		col 7	col 8		col 9			col 10		col 11		col 12		col 13	col 14
Geology	Altitude	Low							Mid								High
	Size	Small			Large				Small				Large				Small				Large
	Basin form	L		V	L			V	L		V		L		V		L	V			L	V
	Depth ¹²
Peat	Shallow or deep	65	65			65	60		65	65		65		60		65		65		65			60
Peat	Very shallow	65	60			60	60		65	60		60		60		65		60		60			60
Low Alkalinity	Shallow or deep	80	75			75	75		80	75		75		75		80		75		75			75
Low Alkalinity	Very shallow	75	75			75	75		75	75		75		75		75		75		75			75
Medium Alkalinity	Shallow or deep	70	70			70	70		70	70		70		70		70		70		70			70
Medium Alkalinity	Very shallow	70	70			70	65		70	70		70		65		70		70		70			65
High Alkalinity, Marl	Shallow or deep	80	75			75	75		80	75		75		75		80		75		75			75
High Alkalinity, Marl	Very shallow	75	75			75	75		75	75		75		75		75		75		75			75
Brackish	Shallow or deep	80	75			75	75		80	75		75		75		75		75		75			75
Brackish	Very shallow	75	75			75	75		75	75		75		75		75		75		75			75

Note to Table 15(b):

On days where the natural outflow volume is < Q _n95, the standards refer to a percentage of the Q _n95 outflow volume.

Page updated: Thursday, June 26, 2008