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News From Behind the Scenes at Engbretson Underwater Photo and Stories about the Freshwater Environments We Visit.




Showing posts with label Clarity. Show all posts
Showing posts with label Clarity. Show all posts

Tuesday, May 26, 2020

What are the Clearest Lakes in Wisconsin? 2019 Report


What are the clearest lakes in Wisconsin?  Every year, I consult with Wisconsin's state-wide citizen's lake monitoring group. They're a network of individuals, usually lake-front property owners who monitor and regularly take a variety of water samples from lakes all across Wisconsin.  The data they compile helps to give us a look at how our lakes are doing. 

One of the many tasks lake monitors perform is to take regular secchi disc readings. This is a universal way of assessing and comparing water clarity.  I'm always interested in knowing which Wisconsin inland lakes are the clearest.  Ordinarily, I rank the lakes that recorded the highest average water clarity for the previous year. This year, I'm looking at lakes that recorded the single highest secchi disc reading in 2019. Here are Wisconsin's clearest inland lakes and their highest single day water clarity readings taken in 2019:

1)   Pine Lake, Waukesha Co. 52 feet
2)   Lake Metonga, Forest Co. 37 feet
3)   Maiden Lake, Oconto Co. 35 feet
4)   Wazee Lake, Jackson Co. 34 feet
5)   Sugar Camp Lake, Oneida Co. 33 feet
6)   Whitefish Lake, Douglas Co. 31 feet
7)   Lake Lucerne, Forest Co. 31 feet
8)   Deer Lake, Polk Co. 30 feet
9)   Crystal Lake, Marquette Co. 29 feet
10) Stone Lake, Washburn Co. 29 feet
11) Lake Owen, Bayfield Co. 29 feet
12) Blue Lake, Oneida Co. 28 feet
13) Smoky Lake, Vilas Co. 28 feet
14) Millicent Lake, Bayfield Co. 28 feet
15) Big Portage Lake, Vilas Co. 28 feet

To see the lake list from 2018, click here. To see the lake list from 2017, click here. To see the lake list from 2016, click here.To see the lake list from 2015, click here.  To see the lake list from 2014, click here.  For the lake list from 2013, click here.  And for the 2012 list of clear lakes, click here.

Saturday, August 25, 2018

How To Shoot Better GoPro Videos of Fish Underwater

We've been getting some nice underwater footage lately from the clear lakes of northern Wisconsin, like this short clip of walleyes relating to sunken timber and rocks.

I'm often asked for advice on ways one can improve the quality of underwater fish videos shot with GoPro cameras in freshwater.  Here are my three best tips for aspiring underwater shooters. 1) Shoot in the clearest water you can find. Lakes or rivers that are cloudy or discolored will ruin image fidelity and definition. If the water isn't clear, nothing else really matters. 2) Use strobe lights to bring out colors and fill in dark shadows. 3) Don't chase the fish! Let them come right into the camera. This is a much more interesting view of them than the "tail shot" you'll always get if you chase them.  Fish are naturally curious and if you're patient, you'll find that they'll swim directly into your lens on their own.

Of course, there are many other tips, but in my mind, these are three things you can start doing today that will dramatically improve your underwater videos taken of freshwater fish.
 
To see more of our underwater fish videos, visit our YouTube Channel.

Thursday, April 2, 2015

Twenty Years of Underwater Observations: What's Changed?




2015 will mark my agency’s 23rd year of photographing freshwater fish, underwater in the wild.  As I thought about that, I began to reflect on two trends I’ve noticed over the past two decades, especially in lakes in Wisconsin and Northern Michigan where I live.  A few things stand out regarding fish sizes and abundance and general lake quality. 
Water Clarity:

As an underwater photographer, water clarity is critically important for getting good images.  Because of that, we make it our business to know where the clearest waters are.  One disturbing trend over the past 20 years is that we seem to be losing many of our historically clear lakes in Wisconsin.  More than a dozen lakes that were once very clear are no longer suitable for underwater photography because they simply are no longer clear enough.  Whether it’s because of run off, phosphorus overload or natural eutrophication is unknown.  But since these dramatic changes have occurred over such a short period of time, it suggests that the causes are not natural and are probably indications of damage we as lake users are facilitating.  On the other hand, there are also lakes that were once turbid or had poor water clarity that are now excellent.  The bad news is that virtually every lake that has significantly improved water clarity, it’s because of the presence of zebra mussels.  That may be a nice byproduct for snorkelers and divers, but the expansion of invasive species may also cause long-term negative consequences that aren’t as desirable as clearer water.

Changes in Fish Size and Abundance:

In Wisconsin’s inland lakes I’ve noticed some real changes in the last twenty years in fish abundance and sizes. In the interest of brevity, rather than detail and discuss each one at length here, I’ve decided to instead post a chart of what my personal observations have been over the past two decades. 

Table 1 Change in abundance and average size of Wisconsin fish species I've observed: 1993-2014
SPECIES
ABUNDANCE
AVERAGE SIZE
Muskie
Unchanged
Unchanged
Northern Pike
Decreased
Decreased
Walleye
Increased
Increased
Largemouth Bass
Increased
Decreased
Smallmouth Bass
Increased
Increased
Yellow Perch
Decreased
Decreased
Bluegill
Unchanged
Decreased
Black Crappie
Unchanged
Decreased
Rock Bass
Decreased
Decreased

It’s interesting to note that many of my personal and subjective observations regarding fish abundance and size structure mirrors what Wisconsin DNR fish biologists have also found over this same time period.  Walleyes and Smallmouth Bass are doing better these days but panfish in general are probably being overexploited in many areas, especially what fish managers consider to be quality fish.  (The Wisconsin DNR is in the early stages now of implementing new panfish regulations that hopefully will reverse a 70 year long trend of ever- increasingly smaller fish.)
 
The Future:
 
So what does these mean for us?  For someone like me who’s trying to photograph large gamefish underwater or fisherman who like to catch them, it means that in many cases, there are fewer trophy fish swimming in Wisconsin waters than there used to be.  Today, for me, it’s easier than ever to encounter and photograph nice-sized smallmouth and walleyes, but it’s getting harder and harder to find larger pike and quality sized panfish.  The future isn’t necessarily a bleak one however.  It’s my hope that we can turn this around.  Today, with camera phones being ubiquitous and replica mounts being both stunning and affordable, there’s little reason not to release not just the trophies but ALL the larger fish we catch.  If these same trends continue for the next twenty years, as fishermen, we’ll have no one to blame but ourselves.