Noosa River
Bustling estuary to tranquil everglades
A look at the tides in key locations
It will be easier if you travel with the gentle tidal flow in the lower section, but it shouldn't affect your trip too much up past Tewantin. Tidal peak flows are likely to be around 2 - 3 kph though could be as high as 4.5 kph near the mouth during spring tides.
The tidal heights seen at the Noosa Head are about the same as those seen at the mouth directly affect the height of the lower sections of the river, with an average difference of 1.07 m between low and high tides. Lake Cootharaba and Cooroibah are about 2 m above sea level, so these will likely have minimal tidal effect outside of spring tides and storm surges.
The Spring tidal ranges seen for various locations measured from the Mean High Water Mark (MHWM) are:
An indication of approximate depths at Lowest Astronomical Tides (LAT) are:
Location | Depth |
---|---|
Munna Point to Mouth | 1 - 3 m with numerous drying sandbars |
Tewantin to Munna Point | 1.5 - 4 m with submerged sandbars |
Lake Cooriobah to Tewantin | 2 - 5 m |
Lake Cooroibah |
Channel: 1 - 1.5 m
Balance: 0.2 - 0.7 m |
Lake Cootharaba to Lake Cooroibah | 3 - 7 m |
Lake Cootharaba | 0.5 - 1.1 m |
Being tidal, the flow usually isn't a factor in any trips, but the 1992 floods provide an indication of what to expect in a major flood event on the river in relation to height above sea level (mAHD) and the flood Average Return Interval (ARI).
Location | Height (mAHD) | Severity (ARI years) |
---|---|---|
The Entrance | 0.91 m | < 2 |
Munna Point | 1.45 m | 15 |
Lake Weyba | 1.85 m | 75 |
Tewantin | 1.80 m | 70 |
Cooroibah Village | 2.55 m | 300 |
Boreen Point | 3.20 m | 400 |
©2024 Alan Davison // Credit // Disclaimer