narrabeen lagoon entrance
Post on 02-Jan-2016
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Narrabeen Lagoon
Sea Wall Entrance to Narrabeen Lagoon
The key processes that affect the entrance to Narrabeen Lagoon include:
•The movement of the entrance
•The pattern of water flow
•The closure of the entrance
Issues created when the lagoon entrance is closed:
•Lack of tidal flow
•Pollution build up
•Sea life is killed
•Increased risk of flooding
Entrance to Narrabeen Lagoon
Humans have affectively shaped the way we see Narrabeen lagoon today. They have had both a positive and negative impact on the lagoon. •The main development that the council has put in place is the retaining, rock seawall-
•Positive impact: stops the lagoon shifting North•Negative Impact: makes the water travel faster causing rips and currents
•Council must dredge the every 4 or 5 years-•Positive impact: allows tidal flow and keeps public happy as to not flooding•Negative impact: Benthic fauna lose habitat every time lagoon is dredged
Evaluate the effectiveness of TWO management strategies that have been used to combat sediment build-up at the North Narrabeen Lagoon entrance.
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