Tributaries
- Downholland Brook
- New Cut
- Bull Cop
- Sandy Brook
- Old Canal
- Fine Jane's Brook
- Leather Barrow's Ditch
- Cheshire Lines Brook
- Barton Brook
- Chisnall Brook
- Rough Brook
- Arnold's Cop
- Main Sluice
- Tongue's Watercourse
- Within's Watercourse
- Lydiate Brook
- Carr Sluice
- Maghull Hey Cop
- Carr Sluice
- Hunt's Brook
- Maghull Brook
- St. Helen's Gutter (as the Alt is known between Aintree and Maghull)
- Dover's Brook
- Whinny Brook
- Harrison's Brook
- Netherton's Brook
- Kirkby Brook
- Knowsley Brook
- Tue Brook
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