Go Back   Winnipesaukee Forum > Winnipesaukee Forums > General Discussion
Home Forums Gallery Webcams Blogs YouTube Channel Classifieds Calendar Register FAQDonate Members List Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
Old 09-20-2010, 12:11 PM   #1
fltsimguy
Senior Member
 
Join Date: Aug 2010
Posts: 69
Thanks: 14
Thanked 30 Times in 11 Posts
Default Underwater Topography

Aside from the depth contours on Bizer maps, has anyone ever seen a map of the underwater topography of the Lake? I've always wondered what it looks like down there.

Mike
fltsimguy is offline   Reply With Quote
Old 09-20-2010, 01:12 PM   #2
NHKathy
Senior Member
 
NHKathy's Avatar
 
Join Date: Sep 2004
Location: Moultonborough when I can / RI
Posts: 699
Thanks: 180
Thanked 38 Times in 22 Posts
Default

I have always wondered the same thing! I would love to see a map showing the bottom of the lake, minus the water....
NHKathy is offline   Reply With Quote
Old 09-20-2010, 02:00 PM   #3
MikeF-NH
Senior Member
 
Join Date: Apr 2009
Posts: 317
Thanks: 2
Thanked 120 Times in 80 Posts
Default

other than Bizer, the last two versions of the Navionics chips provide very detained mapping of the bottom. The lastest version is accurate to like 5 ft. This chip will run in any Navionics compatible GPS.
MikeF-NH is offline   Reply With Quote
Old 09-20-2010, 02:46 PM   #4
Rattlesnake Gal
Senior Member
 
Rattlesnake Gal's Avatar
 
Join Date: Nov 2003
Location: Central NH
Posts: 5,252
Blog Entries: 1
Thanks: 1,447
Thanked 1,349 Times in 475 Posts
Smile Navionics Map

This sample of my Navionics map seems to be a bit more detailed for underwater topography.

I did a little investigating when I spotted that they named some of the under water mountains in the lake. The person I contacted at Navionics was sure that USGS was the one to name these features. This is the response that USGS sent back:

Underwater features generally are not shown on USGS topographic maps. I took a look at the USGS Geographic Names Information System (GNIS) database at U.S. Board on Geographic Names and found no features by those names listed in New Hampshire.

I am forwarding your inquiry to the GNIS Manager, for further response.
(I have not pursued the issue any further.)
Attached Images
 
Rattlesnake Gal is offline   Reply With Quote
The Following 6 Users Say Thank You to Rattlesnake Gal For This Useful Post:
Bear Island South (09-20-2010), DRH (09-21-2010), GsChinadoll (09-27-2010), Jonas Pilot (09-20-2010), Newbiesaukee (09-21-2010), SteveA (09-21-2010)
Old 09-20-2010, 03:50 PM   #5
fltsimguy
Senior Member
 
Join Date: Aug 2010
Posts: 69
Thanks: 14
Thanked 30 Times in 11 Posts
Default

That's a pretty cool graphic! The one area of the lake I was particularly interested in was The Broads. I've always been curious why the depth goes from 180'+ to 30' so quickly. Thanks for sharing!
fltsimguy is offline   Reply With Quote
Sponsored Links
Old 09-20-2010, 06:18 PM   #6
jrc
Senior Member
 
Join Date: Apr 2004
Location: NH
Posts: 2,689
Thanks: 33
Thanked 439 Times in 249 Posts
Default

I have a pretty good feeling that Bizer knows where those names came from.
jrc is offline   Reply With Quote
Old 09-21-2010, 10:11 PM   #7
Rattlesnake Guy
Senior Member
 
Rattlesnake Guy's Avatar
 
Join Date: Sep 2004
Posts: 1,254
Thanks: 423
Thanked 366 Times in 175 Posts
Default

The map that RG scanned above is available at


Gilford
FAY'S MARINE STORE
3 Varney Point Road
Gilford, NH 03249 UNITED STATES
Phone: 603-293-0808
Fax: 603-293-0022
Email: dave@faysboatyard.com

SILVER SANDS MARINA
Rte 11B, 103 Weirs Road
Gilford, NH 03249 UNITED STATES
Phone: (603) 293-2115
Fax: (603) 293-2086
Email: jg@silversands.com
Rattlesnake Guy is offline   Reply With Quote
Old 09-22-2010, 10:39 AM   #8
KBoater
Senior Member
 
KBoater's Avatar
 
Join Date: Apr 2004
Location: Wolfeboro
Posts: 521
Thanks: 10
Thanked 29 Times in 15 Posts
Default Winter harbor

RG great map. Is there a set of the lake? I'm interested in the enterance to Winter Harbor. Everytime I drive thru there my depth finder goes crazy.
__________________
Home Permanently in NH
KBoater is offline   Reply With Quote
Old 09-22-2010, 11:30 AM   #9
Rattlesnake Gal
Senior Member
 
Rattlesnake Gal's Avatar
 
Join Date: Nov 2003
Location: Central NH
Posts: 5,252
Blog Entries: 1
Thanks: 1,447
Thanked 1,349 Times in 475 Posts
Smile Navionics Map

FLboater, my attachment is actually part of a folded, vinyl-ish, whole lake map. I chose that area because I was interested about where the underwater mountain names came from. From the above e-mail that I received from USGS, I suspect the name are not official.

This map is quite interesting for studying and I look at if often. I'm glad R-Guy snapped it up when he saw it at County Stores hardware in Milford. I hope the local retailers that are listed above have a lot of copies! Thanks Rattlesnake Guy.

When I get back to the camp, I can get a better scan of the entrance to Winter Harbor and send it along to you.
Rattlesnake Gal is offline   Reply With Quote
Old 09-22-2010, 12:53 PM   #10
SIKSUKR
Senior Member
 
SIKSUKR's Avatar
 
Join Date: Apr 2004
Posts: 5,075
Thanks: 215
Thanked 903 Times in 509 Posts
Talking Mt Celia?

Cool map RG, gotta get me one. This map got me looking at the depth recordings on my Bizer. I found an area that I travel frequently that I never thought about being shallow. Half way between Jolly and Sandy in the Broads it gets down to 12 ft! Can I name it, huh, huh, can I, can I?
__________________
SIKSUKR
SIKSUKR is offline   Reply With Quote
Old 09-23-2010, 08:13 AM   #11
SAMIAM
Senior Member
 
Join Date: Apr 2004
Location: Moultonborough
Posts: 2,834
Thanks: 326
Thanked 1,625 Times in 561 Posts
Default

Flboater, I'm curious too. I've noticed that during a NW wind the swells build up at the entrance of Winter harbor....even bigger than the broads.
SAMIAM is offline   Reply With Quote
Old 09-27-2010, 11:24 AM   #12
KBoater
Senior Member
 
KBoater's Avatar
 
Join Date: Apr 2004
Location: Wolfeboro
Posts: 521
Thanks: 10
Thanked 29 Times in 15 Posts
Default Got The Map

I bought the map yesterday at Fayes. I think the Winter Harbor Entrance thing is related to how you cut the entrance. The 2 side points sand bars are larger than I thought.

Great map.
__________________
Home Permanently in NH
KBoater is offline   Reply With Quote
Old 09-27-2010, 12:13 PM   #13
Diver1111
Senior Member
 
Join Date: Jun 2005
Location: Exeter NH
Posts: 596
Thanks: 0
Thanked 1,027 Times in 224 Posts
Default Bathymetric map from Navionics

Neither Fays not Silver Sands has the bathymetric chart posted here. They are made by Navionics but marketed by MapTech (508-990-9020).

Price is $14.95 and they have a limited number in stock; Re-print set for about Feb. 2011. At some point they will contact Winni marinas and stores etc. and get them out that way also.
Diver1111 is offline   Reply With Quote
Old 09-27-2010, 04:03 PM   #14
KBoater
Senior Member
 
KBoater's Avatar
 
Join Date: Apr 2004
Location: Wolfeboro
Posts: 521
Thanks: 10
Thanked 29 Times in 15 Posts
Default

The Map I bought at Fays is a navionics hotmapes premium.Lake Winnipesaukee
__________________
Home Permanently in NH
KBoater is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -5. The time now is 09:55 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.

This page was generated in 0.21866 seconds