The Inkwells | |
---|---|
Shafters (upper) Hole (lower) | |
![]() The upper Inkwell | |
Location | Marin County, California |
Coordinates | 38°00′17″N122°42′32″W / 38.004831°N 122.708891°W |
Part of | Tomales Bay Watershed |
Primary inflows | Lagunitas Creek, San Geronimo Creek |
Primary outflows | Lagunitas Creek |
Surface elevation | 53 metres (174 ft) |
References | [1] |
The Inkwells (also known as The Ink Wells) are two deep natural swimming pools in Lagunitas Creek, in Marin County, California. [2] The upper Inkwell is also known as "Shafters", named after the former railroad bridge that bore its name nearby, whereas the lower Inkwell is simply known as "Inkwell" or "Hole" because it is deeper and darker. Together, they are known as "The Inkwells". They are a common swimming spot in summer, despite failing to meet current water quality standards due to high levels of coliform. [3] [4] The Inkwells are accessible by car as well as public transit, with a Marin Transit bus stop being less than a mile away. [5] The Inkwells Bridge, which runs above the inkwells, is part of the Bay Area Ridge Trail. It also carries pipes that bring water from nearby Kent Lake and the nearby Nicasio Reservoir to be treated. [6] Coho salmon can be seen in the pools trying to jump and swim upstream from late fall into winter; the best time to see the salmon is a few days after a heavy rain.
San Francisco Bay is a large tidal estuary in the U.S. state of California, and gives its name to the San Francisco Bay Area. It is dominated by the cities of San Francisco, San Jose, and Oakland.
Swimming is the self-propulsion of a person through water or other liquid, such as saltwater or freshwater environments, usually for recreation, sport, exercise, or survival. Swimmers achieve locomotion by coordinating limb and body movements to achieve hydrodynamic thrust that results in directional motion. Newborns can instinctively hold their breath underwater and exhibit rudimentary swimming movements as part of a survival reflex. Swimming requires endurance, skill, and efficient techniques to maximize speed and minimize energy consumption.
Marin County is a county located in the northwestern part of the San Francisco Bay Area of the U.S. state of California. As of the 2020 census, the population was 262,231. Its county seat and largest city is San Rafael. Marin County is across the Golden Gate Bridge from San Francisco, and is included in the San Francisco–Oakland–Berkeley, CA Metropolitan Statistical Area.
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Swimming pool sanitation is the process of ensuring healthy conditions in swimming pools. Proper sanitation is needed to maintain the visual clarity of water and to prevent the transmission of infectious waterborne diseases.
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A swimming pool, swimming bath, wading pool, paddling pool, or simply pool, is a structure designed to hold water to enable swimming or other leisure activities. Pools can be built into the ground or built above ground, and may be found as a feature aboard ocean-liners and cruise ships. In-ground pools are most commonly constructed from materials such as concrete, natural stone, metal, plastic, composite or fiberglass, and can be of a custom size and shape or built to a standardized size, the largest of which is the Olympic-size swimming pool.
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