What water plant is this ?

[fishfish]

It’s taking over Salmon Creek. 4 foot long root system the one i checked. 

[REEL EXCITED]

Looks to be Water Chestnut, (Trapanatans).

[LongLine]

Yes, water chestnut.  (Last page of aquatic plants)

 

DEC Prohibited and Regulated Invasive Plants

[ifishy]

water chestnut the seeds get a spike on them and it can and will go through a sandal or sneaker unfortunately i know this the hard way.

[fishfish]

45 minutes ago, LongLine said:

Yes, water chestnut.  (Last page of aquatic plants)

 

DEC Prohibited and Regulated Invasive Plants

Thanks for the link. 

[Lotalota]

It’s water chestnut, which is an invasive species here in NY. You can report it to your local invasive species management office, here: https://fingerlakesinvasives.org/staff/. They might be able to assist with removal. 

[Scoobyst]

Looks like you might be dealing with an aggressive patch of curly‑leaf pondweed or Eurasian watermilfoil, especially with roots that long. I’ve been down that road and found that local conservation offices can help confirm the ID from a quick photo. On a lighter note, messing with all that lake growth pushed me to focus more on my indoor setup, and indoor plant delivery was a nice break from the chaos outside.

Edited June 15 by Scoobyst

[GAMBLER]

1 hour ago, Scoobyst said:

Looks a lot like Eurasian watermilfoil to me. That long root and fast spread match it. I’d check upstream for dense mats forming; it can take over shallow creeks fast.

It's water chestnut.