Lake Rosalind is a small inland lake

Lake

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 located in Bruce County

Bruce County, Ontario

Bruce County is a county in western Ontario, Canada, and includes the Bruce Peninsula. As of 2006, the population was 65,349. The area was . The county seat is Walkerton, Ontario. It is located at ....

, Ontario

Ontario

Ontario is a province of Canada, located in east-central Canada. It is Canada's most populous province and second largest in total area. It is home to the nation's most populous city, Toronto, and the nation's capital, Ottawa....

, Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

 between the towns of Hanover

Hanover, Ontario

Hanover is a town in the Canadian province of Ontario, located in southern Grey County, west of Durham and east of Walkerton on Grey/Bruce Road 4. Hanover marks the border between Grey County and Bruce County.-History:...

 and Walkerton

Walkerton, Ontario

Walkerton is a community in the Canadian province of Ontario, located within and governed by the municipality of Brockton. It is the site of Brockton's municipal offices and the county seat of Bruce County...

. Lake Rosalind and the interconnected Marl Lake to its south are manmade lakes that were created by the excavation of marl

Marl

Marl or marlstone is a calcium carbonate or lime-rich mud or mudstone which contains variable amounts of clays and aragonite. Marl was originally an old term loosely applied to a variety of materials, most of which occur as loose, earthy deposits consisting chiefly of an intimate mixture of clay...

 for local cement

Cement

In the most general sense of the word, a cement is a binder, a substance that sets and hardens independently, and can bind other materials together. The word "cement" traces to the Romans, who used the term opus caementicium to describe masonry resembling modern concrete that was made from crushed...

 plants in the early 1900s and the construction of dams later in 1939 and 1946. Both lakes are relatively shallow and small in area (38 hectare

Hectare

The hectare is a metric unit of area defined as 10,000 square metres , and primarily used in the measurement of land. In 1795, when the metric system was introduced, the are was defined as being 100 square metres and the hectare was thus 100 ares or 1/100 km2...

s and 14 hectares, respectively). Marl Lake receives Lake Rosalind's overflow through a culvert, and there is also an interconnected "North Lake" to the north of Lake Rosalind. Almost the entire lakefront is developed, with mostly small properties that have been "urbanized" with hardened shorelines and manicured lawn

Lawn

A lawn is an area of aesthetic and recreational land planted with grasses or other durable plants, which usually are maintained at a low and consistent height. Low ornamental meadows in natural landscaping styles are a contemporary option of a lawn...

s. The high level of development results from the proximity of Hanover and Walkerton, an excellent road system in the area, and a relative scarcity of inland lakes in Bruce County.

The major source of water for the lake is from groundwater

Groundwater

Groundwater is water located beneath the ground surface in soil pore spaces and in the fractures of rock formations. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. The depth at which soil pore spaces or fractures and voids in rock...

 aquifer

Aquifer

An aquifer is a wet underground layer of water-bearing permeable rock or unconsolidated materials from which groundwater can be usefully extracted using a water well. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology...

s; there are no major stream

Stream

A stream is a body of water with a current, confined within a bed and stream banks. Depending on its locale or certain characteristics, a stream may be referred to as a branch, brook, beck, burn, creek, "crick", gill , kill, lick, rill, river, syke, bayou, rivulet, streamage, wash, run or...

s or creeks that flow into the lake. There is minimal surface runoff

Surface runoff

Surface runoff is the water flow that occurs when soil is infiltrated to full capacity and excess water from rain, meltwater, or other sources flows over the land. This is a major component of the water cycle. Runoff that occurs on surfaces before reaching a channel is also called a nonpoint source...

 from surrounding land, which is used for agricultural purposes. Lake Rosalind is considered a headwater lake and provides water for the Saugeen River

Saugeen River

The Saugeen River is located in southern Ontario, Canada, flowing generally north-west about 160 km before exiting into Lake Huron. The river is navigable for some distance, and was once an important barge route...

. Little forest

Forest

A forest, also referred to as a wood or the woods, is an area with a high density of trees. As with cities, depending where you are in the world, what is considered a forest may vary significantly in size and have various classification according to how and what of the forest is composed...

 cover remains around the lake. In the fall of 2006, Lake Rosalind was infested with blue-green algae, which put a sudden halt to all water-related activities. Over the winter the algae died off, but residents are urged to not use lawn fertilizers and to keep their shoreline natural.