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ANNEX 5: SURFACE WATER RESOURCES - PROPOSED CONDITION LIMITS FOR FRESHWATER FLOWS INTO TRANSITIONAL WATERS
1. To determine the freshwater flow condition limits applicable to a transitional water or any part thereof, SEPA shall classify the transitional water or part as being of the Type specified in Column 1 of Table A below which corresponds with the applicable description specified in Column 2 of that Table.
2. Once SEPA has classified, in accordance with paragraph 1, a transitional water or part thereof as being of a Type specified in Row 2 of Table B below, it shall apply, as applicable, the "high", "good", "moderate" or "poor" freshwater flow condition limits specified in Rows 3, 4, 5 and 6 of Columns 2, 3, 4, and 5 respectively, of that Table to that transitional water or part.
Table A: Criteria for identifying types of transitional water to which the freshwater flow conditional limits for transitional waters apply
Column 1 | Column 2 |
|---|
Type | Ratio of the total Qn 95 freshwater inflow (in cubic metres per second) into the transitional water, or part thereof, from rivers with a catchment area = 10 km 2; to the volume (in cubic metres) of water in the transitional water, or part thereof, at mean high water (V H) 
|
High sensitivity ( HS) | > 60 |
Medium sensitivity ( MS) | 35 - 60 |
Low sensitivity ( LS) | < 35 |
Table B: Freshwater flow condition limits for transitional waters or parts thereof
| Column 1 | Column 2 | Column 3 | Column 4 | Column 5 |
|---|
Row 1 | | High | Good | Moderate | Poor |
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Row 2 | Type | HS | MS | LS | HS | MS | LS | HS | MS | LS | HS | LS | MS |
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Row 3 | Maximum reduction in freshwater flow volume at daily freshwater flows = Qn 60 | 10 % of daily Q n | 40 % of daily Q n | 45 % of daily Q n | 50 % of daily Q n | 55 % of daily Q n | 60 % of daily Q n | 65 % of daily Q n | 70 % of daily Q n | 75 % of daily Q n | 80 % of daily Q n |
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Row 4 | Maximum reduction in freshwater flow volume at daily flows < Qn 60 and = to Qn 70 | 10 % of daily Q n | 30 % of daily Q n | 40 % of daily Q n | 45 % of daily Q n | 50 % of daily Q n | 55 % of daily Q n | 60 % of daily Q n | 65 % of daily Q n | 70 % of daily Q n | 75 % of daily Q n |
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Row 5 | Maximum reduction in freshwater flow volume at daily flows < Qn 70 and = to Qn 95 | 10 % of daily Q n | 30 % of daily Q n | 35 % of daily Q n | 40 % of daily Q n | 45 % of daily Q n | 50 % of daily Q n | 55 % of daily Q n | 60 % of daily Q n | 65 % of daily Q n | 70 % of daily Q n |
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Row 6 | Maximum reduction in freshwater flow volume at daily flows < Qn 95 | 5 % of daily Q n95 | 25 % of Q n95 | 30 % of Q n95 | 35 % of Q n95 | 40 % of Q n95 | 45 % of Q n95 | 50 % of Q n95 | 55 % of Q n95 | 60 % of Q n95 | 65 % of Q n95 |
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