Salt water...then several miles of Fresh / Brackish.....flush?

Quint4

Well-Known Member
TECHNICAL Contributor
Oct 6, 2006
6,751
NC
Boat Info
CY 3375
Engines
7.4 MPI twin
Our boat sits on a fresh water canal off the Trent river in NC. We run out to the Neuse River (salty but not as much as Ocean) then sometimes to the ICW (full salt). So when I return, my last several miles is in fresh water before docking. So am I good?....or do I still need to flush engine etc.?
 
Our boat sits on a fresh water canal off the Trent river in NC. We run out to the Neuse River (salty but not as much as Ocean) then sometimes to the ICW (full salt). So when I return, my last several miles is in fresh water before docking. So am I good?....or do I still need to flush engine etc.?

You should be fine as long as your still up to temp/T-stat open coming back, especially if any of that is at cruise.
 
How does salt water then turn to fresh? Brackish is salt water
Brackish is the area between the salt and fresh. My river requires me to buy both a freshwater water fishing and salt water fishing license. That's why I bought a salinity meter. I wanted to know for sure what the differences were. There's a huge difference on the incoming tide vs outgoing too.
 
Our boat sits on a fresh water canal off the Trent river in NC. We run out to the Neuse River (salty but not as much as Ocean) then sometimes to the ICW (full salt). So when I return, my last several miles is in fresh water before docking. So am I good?....or do I still need to flush engine etc.?
My opinion is that your river flush is far better than on a hose.
 
I kept my boat in a slip up a brackish canal for 3 years. I had to replace the risers 3rd year and they were completely corroded.
This location had good tidal currents so fresh water was always flowing along w salt depending on direction.

I ended up putting that boat back on the trailer.
 
I kept my boat in a slip up a brackish canal for 3 years. I had to replace the risers 3rd year and they were completely corroded.
This location had good tidal currents so fresh water was always flowing along w salt depending on direction.

I ended up putting that boat back on the trailer.
There are very different levels of brackish and where you are located on the river/canal can make all the difference. Eventually the brackish turns to completely fresh normally. Like was mentioned, brackish is still salt.
 
I kept my boat in a slip up a brackish canal for 3 years. I had to replace the risers 3rd year and they were completely corroded.
This location had good tidal currents so fresh water was always flowing along w salt depending on direction.

I ended up putting that boat back on the trailer.
You ate up a brand new set of manifolds and risers in 3 years? Chesapeake we get 7 to 8 years depending on the salinity every year (it fluctuates). 3 years, how is that possible? I think even in Florida they get longer life.
 
If you see crabs by your dock you have salt. Call it what you want
I won't disagree with that. There are crabs where I launch, but up river 3 miles by my house there aren't.
 
You ate up a brand new set of manifolds and risers in 3 years? Chesapeake we get 7 to 8 years depending on the salinity every year (it fluctuates). 3 years, how is that possible? I think even in Florida they get longer life.
I feel like the lower Chesapeake is more concentrated with salt than the ocean. It's warmer so you can have more salt suspended I'd suspect.
 
You ate up a brand new set of manifolds and risers in 3 years? Chesapeake we get 7 to 8 years depending on the salinity every year (it fluctuates). 3 years, how is that possible? I think even in Florida they get longer life.


You’re right! It’s impossible. Can’t happen. Won’t happen. Never will happen.

I guess the electrolysis on my B1 drive is also impossible to happen. :confused:
 

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