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Mary Lake State Natural Area

Adelaide Rd

Mercer, WI 54547

Mary Lake State Natural Area

The 3-acre Mary Lake is one of very few known meromictic lakes in Wisconsin. Meromixis, the permanent thermal stratification of the water, results from the lake having an extremely small surface area in comparison to its depth. Mary Lake has a small 3-acre surface area but is disproportionately very deep - 67 feet. Due to the extreme relative depth in relation to surface area, watershed soils, and its protection from surrounding uplands, Mary Lake never "turns over" and circulates as the water temperature changes in the spring and fall as is typical of most other Wisconsin lakes. Instead, the lake stays stratified creating unusual chemical and biological layers. Internationally known to limnologists, extensive research has been conducted on the physical, biological, and chemical properties of the lake since the 1920's. Mary Lake is second in a chain of five interconnected lakes and is primarily fed by land runoff and inflow from a small stream that connects Mary Lake to nearby Lake Rose. Mary Lake is nestled in a small basin and surrounded by dense forest, which helps shelter the lake from wind action. The surrounding forest is primarily second-growth northern hardwood forest, swamp hardwoods, and swamp conifers. Dominant species include white cedar, spruce, white pine, and balsam fir. Mary Lake is owned by the DNR and was designated a State Natural Area in 1999.

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  Friday, Dec 27, 2024 at 5:00 p.m. CT

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											<div>Adelaide Rd</div>
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						<p>The 3-acre Mary Lake is one of very few known meromictic lakes in Wisconsin. Meromixis, the permanent thermal stratification of the water, results from the lake having an extremely small surface area in comparison to its depth. Mary Lake has a small 3-acre surface area but is disproportionately very deep - 67 feet. Due to the extreme relative depth in relation to surface area, watershed soils, and its protection from surrounding uplands, Mary Lake never "turns over" and circulates as the water temperature changes in the spring and fall as is typical of most other Wisconsin lakes. Instead, the lake stays stratified creating unusual chemical and biological layers. Internationally known to limnologists, extensive research has been conducted on the physical, biological, and chemical properties of the lake since the 1920's. Mary Lake is second in a chain of five interconnected lakes and is primarily fed by land runoff and inflow from a small stream that connects Mary Lake to nearby Lake Rose. Mary Lake is nestled in a small basin and surrounded by dense forest, which helps shelter the lake from wind action. The surrounding forest is primarily second-growth northern hardwood forest, swamp hardwoods, and swamp conifers. Dominant species include white cedar, spruce, white pine, and balsam fir. Mary Lake is owned by the DNR and was designated a State Natural Area in 1999.</p>		</div>
		

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											<div>Adelaide Rd</div>
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												<span>54547</span>
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						<p>The 3-acre Mary Lake is one of very few known meromictic lakes in Wisconsin. Meromixis, the permanent thermal stratification of the water, results from the lake having an extremely small surface area in comparison to its depth. Mary Lake has a small 3-acre surface area but is disproportionately very deep - 67 feet. Due to the extreme relative depth in relation to surface area, watershed soils, and its protection from surrounding uplands, Mary Lake never "turns over" and circulates as the water temperature changes in the spring and fall as is typical of most other Wisconsin lakes. Instead, the lake stays stratified creating unusual chemical and biological layers. Internationally known to limnologists, extensive research has been conducted on the physical, biological, and chemical properties of the lake since the 1920's. Mary Lake is second in a chain of five interconnected lakes and is primarily fed by land runoff and inflow from a small stream that connects Mary Lake to nearby Lake Rose. Mary Lake is nestled in a small basin and surrounded by dense forest, which helps shelter the lake from wind action. The surrounding forest is primarily second-growth northern hardwood forest, swamp hardwoods, and swamp conifers. Dominant species include white cedar, spruce, white pine, and balsam fir. Mary Lake is owned by the DNR and was designated a State Natural Area in 1999.</p>		</div>
		

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						<p>The 3-acre Mary Lake is one of very few known meromictic lakes in Wisconsin. Meromixis, the permanent thermal stratification of the water, results from the lake having an extremely small surface area in comparison to its depth. Mary Lake has a small 3-acre surface area but is disproportionately very deep - 67 feet. Due to the extreme relative depth in relation to surface area, watershed soils, and its protection from surrounding uplands, Mary Lake never "turns over" and circulates as the water temperature changes in the spring and fall as is typical of most other Wisconsin lakes. Instead, the lake stays stratified creating unusual chemical and biological layers. Internationally known to limnologists, extensive research has been conducted on the physical, biological, and chemical properties of the lake since the 1920's. Mary Lake is second in a chain of five interconnected lakes and is primarily fed by land runoff and inflow from a small stream that connects Mary Lake to nearby Lake Rose. Mary Lake is nestled in a small basin and surrounded by dense forest, which helps shelter the lake from wind action. The surrounding forest is primarily second-growth northern hardwood forest, swamp hardwoods, and swamp conifers. Dominant species include white cedar, spruce, white pine, and balsam fir. Mary Lake is owned by the DNR and was designated a State Natural Area in 1999.</p>		</div>
		

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						<p>The 3-acre Mary Lake is one of very few known meromictic lakes in Wisconsin. Meromixis, the permanent thermal stratification of the water, results from the lake having an extremely small surface area in comparison to its depth. Mary Lake has a small 3-acre surface area but is disproportionately very deep - 67 feet. Due to the extreme relative depth in relation to surface area, watershed soils, and its protection from surrounding uplands, Mary Lake never "turns over" and circulates as the water temperature changes in the spring and fall as is typical of most other Wisconsin lakes. Instead, the lake stays stratified creating unusual chemical and biological layers. Internationally known to limnologists, extensive research has been conducted on the physical, biological, and chemical properties of the lake since the 1920's. Mary Lake is second in a chain of five interconnected lakes and is primarily fed by land runoff and inflow from a small stream that connects Mary Lake to nearby Lake Rose. Mary Lake is nestled in a small basin and surrounded by dense forest, which helps shelter the lake from wind action. The surrounding forest is primarily second-growth northern hardwood forest, swamp hardwoods, and swamp conifers. Dominant species include white cedar, spruce, white pine, and balsam fir. Mary Lake is owned by the DNR and was designated a State Natural Area in 1999.</p>		</div>
		

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		<header><h1 class="article-headline">Mary Lake State Natural Area</h1></header>

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											<div>Adelaide Rd</div>
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							<span>Mercer</span>,
							<span>WI</span>
												<span>54547</span>
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						<p>The 3-acre Mary Lake is one of very few known meromictic lakes in Wisconsin. Meromixis, the permanent thermal stratification of the water, results from the lake having an extremely small surface area in comparison to its depth. Mary Lake has a small 3-acre surface area but is disproportionately very deep - 67 feet. Due to the extreme relative depth in relation to surface area, watershed soils, and its protection from surrounding uplands, Mary Lake never "turns over" and circulates as the water temperature changes in the spring and fall as is typical of most other Wisconsin lakes. Instead, the lake stays stratified creating unusual chemical and biological layers. Internationally known to limnologists, extensive research has been conducted on the physical, biological, and chemical properties of the lake since the 1920's. Mary Lake is second in a chain of five interconnected lakes and is primarily fed by land runoff and inflow from a small stream that connects Mary Lake to nearby Lake Rose. Mary Lake is nestled in a small basin and surrounded by dense forest, which helps shelter the lake from wind action. The surrounding forest is primarily second-growth northern hardwood forest, swamp hardwoods, and swamp conifers. Dominant species include white cedar, spruce, white pine, and balsam fir. Mary Lake is owned by the DNR and was designated a State Natural Area in 1999.</p>		</div>
		

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						<p>The 3-acre Mary Lake is one of very few known meromictic lakes in Wisconsin. Meromixis, the permanent thermal stratification of the water, results from the lake having an extremely small surface area in comparison to its depth. Mary Lake has a small 3-acre surface area but is disproportionately very deep - 67 feet. Due to the extreme relative depth in relation to surface area, watershed soils, and its protection from surrounding uplands, Mary Lake never "turns over" and circulates as the water temperature changes in the spring and fall as is typical of most other Wisconsin lakes. Instead, the lake stays stratified creating unusual chemical and biological layers. Internationally known to limnologists, extensive research has been conducted on the physical, biological, and chemical properties of the lake since the 1920's. Mary Lake is second in a chain of five interconnected lakes and is primarily fed by land runoff and inflow from a small stream that connects Mary Lake to nearby Lake Rose. Mary Lake is nestled in a small basin and surrounded by dense forest, which helps shelter the lake from wind action. The surrounding forest is primarily second-growth northern hardwood forest, swamp hardwoods, and swamp conifers. Dominant species include white cedar, spruce, white pine, and balsam fir. Mary Lake is owned by the DNR and was designated a State Natural Area in 1999.</p>		</div>
		

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	'title' => 'Back to Things to Do',
	'slug' => 'things-to-do'
)
$i = (int) 0
include - APP/View/Layouts/aarp_2023.ctp, line 243
include - APP/View/Layouts/aarp_2023.ctp, line 243
View::_evaluate() - CORE/Cake/View/View.php, line 971
View::_render() - CORE/Cake/View/View.php, line 933
View::renderLayout() - CORE/Cake/View/View.php, line 546
View::render() - CORE/Cake/View/View.php, line 481
Controller::render() - CORE/Cake/Controller/Controller.php, line 963
AppController::renderPage() - APP/Controller/AppController.php, line 136
PlacesController::display() - APP/Controller/PlacesController.php, line 501
ReflectionMethod::invokeArgs() - [internal], line ??
Controller::invokeAction() - CORE/Cake/Controller/Controller.php, line 491
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 193
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167
[main] - APP/webroot/index.php, line 118

Warning (2): include() [<a href='http://php.net/function.include'>function.include</a>]: Failed opening '/var/www/vhosts/vcc_staging/app/Resource/aarp2_master.bodyTargeting.html' for inclusion (include_path='/var/www/vhosts/vcc_staging/lib:.:/usr/share/pear:/usr/share/php') [APP/View/Layouts/aarp_2023.ctp, line 243]
Code Context
            <?php if (!$nowrapper):  // MLW - Spanish wrappers TBD
                    include (APP . "Resource/aarp2_master.footer.html");
                    include (APP . "Resource/aarp2_master.bodyTargeting.html");
$viewFile = '/var/www/vhosts/vcc_staging/app/View/Layouts/aarp_2023.ctp'
$dataForView = array(
	'content_for_layout' => '<div class="row twoColumnLayout">
	<div class="col-md-8 left-rail"><div class="module clearfix"><div class="ar-basic-box">
	<div class="module-spacer">
		<header><h1 class="article-headline">Mary Lake State Natural Area</h1></header>

		<div class="row">
			<div class="col-sm-6 left module-spacer">
				<p>
					<div>
											<div>Adelaide Rd</div>
											<div>
							<span>Mercer</span>,
							<span>WI</span>
												<span>54547</span>
											</div>
					</div>
				</p>
								<div>
					<i class="fa fa-external-link-square"></i> 
										<a href="https://dnr.wi.gov/topic/Lands/naturalareas/index.asp?SNA=264" target="_blank">Mary Lake State Natural Area</a>
								</div>
								
			</div>
			<div class="col-sm-6 module-spacer">
				<iframe width="100%" height="220" frameborder="0" style="border:0" src="https://www.google.com/maps/embed/v1/place?key=AIzaSyCU5aZylcrTOLke9e3U0F2mXovlZ4bL8yk&q=Mary+Lake+State+Natural+Area%2C+Adelaide+Rd%2C+Mercer%2C+WI+54547" allowfullscreen> </iframe>
			</div>
		</div>


				<div class="module-spacer clearfix">
						<p>The 3-acre Mary Lake is one of very few known meromictic lakes in Wisconsin. Meromixis, the permanent thermal stratification of the water, results from the lake having an extremely small surface area in comparison to its depth. Mary Lake has a small 3-acre surface area but is disproportionately very deep - 67 feet. Due to the extreme relative depth in relation to surface area, watershed soils, and its protection from surrounding uplands, Mary Lake never "turns over" and circulates as the water temperature changes in the spring and fall as is typical of most other Wisconsin lakes. Instead, the lake stays stratified creating unusual chemical and biological layers. Internationally known to limnologists, extensive research has been conducted on the physical, biological, and chemical properties of the lake since the 1920's. Mary Lake is second in a chain of five interconnected lakes and is primarily fed by land runoff and inflow from a small stream that connects Mary Lake to nearby Lake Rose. Mary Lake is nestled in a small basin and surrounded by dense forest, which helps shelter the lake from wind action. The surrounding forest is primarily second-growth northern hardwood forest, swamp hardwoods, and swamp conifers. Dominant species include white cedar, spruce, white pine, and balsam fir. Mary Lake is owned by the DNR and was designated a State Natural Area in 1999.</p>		</div>
		

	<div class="reportthis" style="margin-bottom: 20px;">
                <form method="post" action="/mercer-wi/report/place/mary-lake-state-natural-area-mercer-wi.html">
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<a data-formelementid="CSN-LOCAL-HC-PLSK-02272024" 
	href="/mercer-wi/home-and-community/?intcmp=CSN-LOCAL-HC-PLSK-02272024"><img class="img-responsive" 
	alt="Explore the free AARP HomeFit Guide" title="Explore the free AARP HomeFit Guide" 
	src="https://cdn-aarp.americantowns.com/img/touts/HomeFit_750x150.png"></a>
</div></div></div>
	<div class="col-md-4 right-rail thin-rhs"><div class="module clearfix"><!--default-->
<!-- module_RHS - AARP Events -->

<div class="ar-basic-box module-spacer">
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			<a href="/mercer-wi/aarp-events/" data-formelementid="LOCAL-BTN-CLK-SEEALL-EVENTS">
				<img style="width:30px;" src="https://cdn-aarp.americantowns.com/img/template/icons/aarp_event_icon.png" alt="Upcoming AARP Events" />
			</a>
		</div>
		<h2 class="visible-lg">AARP Events for Mercer</h2>
		<h2 class="hidden-lg">AARP Events for Mercer</h2>
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				<li class="item" data-pageindex="1">

					
					<h2 class="title"><a href="/aarp-event/aarp-wy-qigong-with-nate-12272024-64n6nsqv839.html" data-formelementid="LOCAL-BTN-CLK-EVENTS-THE-HEALING-ART-OF-QIGONG-TRY-OUR-GENTLE-HOME-WORKOUT">The Healing Art of Qigong: Try Our Gentle Home Workout</a></h2>
					<p class="time">Friday, Dec 27, 2024 at 12:00&nbsp;p.m. CT</p>
					<p class="venue">Zoom</p>
					<p class="loc">Online Event</p>
					
				</li><li class="item" data-pageindex="1">

					
					<h2 class="title"><a href="/aarp-event/aarp-ak-tai-chi-with-mitch-for-strength-balance-and-relaxation-december-2024-anchorage-alaska-120624-fynwlvss9k5.html" data-formelementid="LOCAL-BTN-CLK-EVENTS-FITNESS-LEARN-THE-ANCIENT-ART-OF-TAI-CHI">Fitness: Learn the Ancient Art of Tai Chi</a></h2>
					<p class="time">Friday, Dec 27, 2024 at 5:00&nbsp;p.m. CT</p>
					<p class="venue">Zoom</p>
					<p class="loc">Online Event</p>
					
				</li><li class="item" data-pageindex="1">

					
					<h2 class="title"><a href="/aarp-event/aarp-wy-holiday-harmony-qigong-and-nonviolent-communication-with-nate-12282024-5gnv7r5fl8f.html" data-formelementid="LOCAL-BTN-CLK-EVENTS-HOLIDAY-HARMONY-QIGONG-AND-NONVIOLENT-COMMUNICATION">Holiday Harmony: Qigong and Nonviolent Communication</a></h2>
					<p class="time">Saturday, Dec 28, 2024 at 12:00&nbsp;p.m. CT</p>
					<p class="venue">Zoom</p>
					<p class="loc">Online Event</p>
					
				</li>			</ul>

			<p><a class="link-red" href="/mercer-wi/aarp-events/" data-formelementid="LOCAL-BTN-CLK-SEEALL-EVENTS">View All AARP Events<i class="ml-1 fas fa-chevron-right"></i></a></p>
	
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<div class="card-tout card-dark membership-tout" style="margin:0 0 30px 0;">
	<img class="img-responsive image" 
		title="image of two AARP membership cards"
		alt="image of two AARP membership cards" 
		src="https://cdn-aarp.americantowns.com/img/tout-two-cards.png">
	<div class="title">Only $12 your first year with Automatic Renewal</div>
	<ul class="list">
		<li>Immediate access to your <a href="https://www.aarp.org/benefits-discounts/">member benefits</a></li>
		<li>Discounts on travel and everyday savings</li>
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		<li>FREE second membership</li>
	</ul>
	<div class="action">
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			<a href="https://www.aarp.org/benefits-discounts/my-membership/print-your-card/">Print Card</a></div>
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	'title_for_layout' => 'Place Detail - AARP'
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$content_for_layout = '<div class="row twoColumnLayout">
	<div class="col-md-8 left-rail"><div class="module clearfix"><div class="ar-basic-box">
	<div class="module-spacer">
		<header><h1 class="article-headline">Mary Lake State Natural Area</h1></header>

		<div class="row">
			<div class="col-sm-6 left module-spacer">
				<p>
					<div>
											<div>Adelaide Rd</div>
											<div>
							<span>Mercer</span>,
							<span>WI</span>
												<span>54547</span>
											</div>
					</div>
				</p>
								<div>
					<i class="fa fa-external-link-square"></i> 
										<a href="https://dnr.wi.gov/topic/Lands/naturalareas/index.asp?SNA=264" target="_blank">Mary Lake State Natural Area</a>
								</div>
								
			</div>
			<div class="col-sm-6 module-spacer">
				<iframe width="100%" height="220" frameborder="0" style="border:0" src="https://www.google.com/maps/embed/v1/place?key=AIzaSyCU5aZylcrTOLke9e3U0F2mXovlZ4bL8yk&q=Mary+Lake+State+Natural+Area%2C+Adelaide+Rd%2C+Mercer%2C+WI+54547" allowfullscreen> </iframe>
			</div>
		</div>


				<div class="module-spacer clearfix">
						<p>The 3-acre Mary Lake is one of very few known meromictic lakes in Wisconsin. Meromixis, the permanent thermal stratification of the water, results from the lake having an extremely small surface area in comparison to its depth. Mary Lake has a small 3-acre surface area but is disproportionately very deep - 67 feet. Due to the extreme relative depth in relation to surface area, watershed soils, and its protection from surrounding uplands, Mary Lake never "turns over" and circulates as the water temperature changes in the spring and fall as is typical of most other Wisconsin lakes. Instead, the lake stays stratified creating unusual chemical and biological layers. Internationally known to limnologists, extensive research has been conducted on the physical, biological, and chemical properties of the lake since the 1920's. Mary Lake is second in a chain of five interconnected lakes and is primarily fed by land runoff and inflow from a small stream that connects Mary Lake to nearby Lake Rose. Mary Lake is nestled in a small basin and surrounded by dense forest, which helps shelter the lake from wind action. The surrounding forest is primarily second-growth northern hardwood forest, swamp hardwoods, and swamp conifers. Dominant species include white cedar, spruce, white pine, and balsam fir. Mary Lake is owned by the DNR and was designated a State Natural Area in 1999.</p>		</div>
		

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<a data-formelementid="CSN-LOCAL-HC-PLSK-02272024" 
	href="/mercer-wi/home-and-community/?intcmp=CSN-LOCAL-HC-PLSK-02272024"><img class="img-responsive" 
	alt="Explore the free AARP HomeFit Guide" title="Explore the free AARP HomeFit Guide" 
	src="https://cdn-aarp.americantowns.com/img/touts/HomeFit_750x150.png"></a>
</div></div></div>
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		<h2 class="visible-lg">AARP Events for Mercer</h2>
		<h2 class="hidden-lg">AARP Events for Mercer</h2>
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					<h2 class="title"><a href="/aarp-event/aarp-wy-qigong-with-nate-12272024-64n6nsqv839.html" data-formelementid="LOCAL-BTN-CLK-EVENTS-THE-HEALING-ART-OF-QIGONG-TRY-OUR-GENTLE-HOME-WORKOUT">The Healing Art of Qigong: Try Our Gentle Home Workout</a></h2>
					<p class="time">Friday, Dec 27, 2024 at 12:00&nbsp;p.m. CT</p>
					<p class="venue">Zoom</p>
					<p class="loc">Online Event</p>
					
				</li><li class="item" data-pageindex="1">

					
					<h2 class="title"><a href="/aarp-event/aarp-ak-tai-chi-with-mitch-for-strength-balance-and-relaxation-december-2024-anchorage-alaska-120624-fynwlvss9k5.html" data-formelementid="LOCAL-BTN-CLK-EVENTS-FITNESS-LEARN-THE-ANCIENT-ART-OF-TAI-CHI">Fitness: Learn the Ancient Art of Tai Chi</a></h2>
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					<p class="venue">Zoom</p>
					<p class="loc">Online Event</p>
					
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					<h2 class="title"><a href="/aarp-event/aarp-wy-holiday-harmony-qigong-and-nonviolent-communication-with-nate-12282024-5gnv7r5fl8f.html" data-formelementid="LOCAL-BTN-CLK-EVENTS-HOLIDAY-HARMONY-QIGONG-AND-NONVIOLENT-COMMUNICATION">Holiday Harmony: Qigong and Nonviolent Communication</a></h2>
					<p class="time">Saturday, Dec 28, 2024 at 12:00&nbsp;p.m. CT</p>
					<p class="venue">Zoom</p>
					<p class="loc">Online Event</p>
					
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			<p><a class="link-red" href="/mercer-wi/aarp-events/" data-formelementid="LOCAL-BTN-CLK-SEEALL-EVENTS">View All AARP Events<i class="ml-1 fas fa-chevron-right"></i></a></p>
	
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	<div class="title">Only $12 your first year with Automatic Renewal</div>
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		<li>Discounts on travel and everyday savings</li>
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						<p>The 3-acre Mary Lake is one of very few known meromictic lakes in Wisconsin. Meromixis, the permanent thermal stratification of the water, results from the lake having an extremely small surface area in comparison to its depth. Mary Lake has a small 3-acre surface area but is disproportionately very deep - 67 feet. Due to the extreme relative depth in relation to surface area, watershed soils, and its protection from surrounding uplands, Mary Lake never "turns over" and circulates as the water temperature changes in the spring and fall as is typical of most other Wisconsin lakes. Instead, the lake stays stratified creating unusual chemical and biological layers. Internationally known to limnologists, extensive research has been conducted on the physical, biological, and chemical properties of the lake since the 1920's. Mary Lake is second in a chain of five interconnected lakes and is primarily fed by land runoff and inflow from a small stream that connects Mary Lake to nearby Lake Rose. Mary Lake is nestled in a small basin and surrounded by dense forest, which helps shelter the lake from wind action. The surrounding forest is primarily second-growth northern hardwood forest, swamp hardwoods, and swamp conifers. Dominant species include white cedar, spruce, white pine, and balsam fir. Mary Lake is owned by the DNR and was designated a State Natural Area in 1999.</p>		</div>
		

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						<p>The 3-acre Mary Lake is one of very few known meromictic lakes in Wisconsin. Meromixis, the permanent thermal stratification of the water, results from the lake having an extremely small surface area in comparison to its depth. Mary Lake has a small 3-acre surface area but is disproportionately very deep - 67 feet. Due to the extreme relative depth in relation to surface area, watershed soils, and its protection from surrounding uplands, Mary Lake never "turns over" and circulates as the water temperature changes in the spring and fall as is typical of most other Wisconsin lakes. Instead, the lake stays stratified creating unusual chemical and biological layers. Internationally known to limnologists, extensive research has been conducted on the physical, biological, and chemical properties of the lake since the 1920's. Mary Lake is second in a chain of five interconnected lakes and is primarily fed by land runoff and inflow from a small stream that connects Mary Lake to nearby Lake Rose. Mary Lake is nestled in a small basin and surrounded by dense forest, which helps shelter the lake from wind action. The surrounding forest is primarily second-growth northern hardwood forest, swamp hardwoods, and swamp conifers. Dominant species include white cedar, spruce, white pine, and balsam fir. Mary Lake is owned by the DNR and was designated a State Natural Area in 1999.</p>		</div>
		

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		<header><h1 class="article-headline">Mary Lake State Natural Area</h1></header>

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											<div>Adelaide Rd</div>
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							<span>Mercer</span>,
							<span>WI</span>
												<span>54547</span>
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						<p>The 3-acre Mary Lake is one of very few known meromictic lakes in Wisconsin. Meromixis, the permanent thermal stratification of the water, results from the lake having an extremely small surface area in comparison to its depth. Mary Lake has a small 3-acre surface area but is disproportionately very deep - 67 feet. Due to the extreme relative depth in relation to surface area, watershed soils, and its protection from surrounding uplands, Mary Lake never "turns over" and circulates as the water temperature changes in the spring and fall as is typical of most other Wisconsin lakes. Instead, the lake stays stratified creating unusual chemical and biological layers. Internationally known to limnologists, extensive research has been conducted on the physical, biological, and chemical properties of the lake since the 1920's. Mary Lake is second in a chain of five interconnected lakes and is primarily fed by land runoff and inflow from a small stream that connects Mary Lake to nearby Lake Rose. Mary Lake is nestled in a small basin and surrounded by dense forest, which helps shelter the lake from wind action. The surrounding forest is primarily second-growth northern hardwood forest, swamp hardwoods, and swamp conifers. Dominant species include white cedar, spruce, white pine, and balsam fir. Mary Lake is owned by the DNR and was designated a State Natural Area in 1999.</p>		</div>
		

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							<span>Mercer</span>,
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						<p>The 3-acre Mary Lake is one of very few known meromictic lakes in Wisconsin. Meromixis, the permanent thermal stratification of the water, results from the lake having an extremely small surface area in comparison to its depth. Mary Lake has a small 3-acre surface area but is disproportionately very deep - 67 feet. Due to the extreme relative depth in relation to surface area, watershed soils, and its protection from surrounding uplands, Mary Lake never "turns over" and circulates as the water temperature changes in the spring and fall as is typical of most other Wisconsin lakes. Instead, the lake stays stratified creating unusual chemical and biological layers. Internationally known to limnologists, extensive research has been conducted on the physical, biological, and chemical properties of the lake since the 1920's. Mary Lake is second in a chain of five interconnected lakes and is primarily fed by land runoff and inflow from a small stream that connects Mary Lake to nearby Lake Rose. Mary Lake is nestled in a small basin and surrounded by dense forest, which helps shelter the lake from wind action. The surrounding forest is primarily second-growth northern hardwood forest, swamp hardwoods, and swamp conifers. Dominant species include white cedar, spruce, white pine, and balsam fir. Mary Lake is owned by the DNR and was designated a State Natural Area in 1999.</p>		</div>
		

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Controller::render() - CORE/Cake/Controller/Controller.php, line 963
AppController::renderPage() - APP/Controller/AppController.php, line 136
PlacesController::display() - APP/Controller/PlacesController.php, line 501
ReflectionMethod::invokeArgs() - [internal], line ??
Controller::invokeAction() - CORE/Cake/Controller/Controller.php, line 491
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 193
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167
[main] - APP/webroot/index.php, line 118