Diving atWazee Lake (United States)
Wazee Lake, a refurbished iron ore quarry in Black River Falls, Wisconsin, stands as the deepest inland lake in the state. This non-motorized body of water, meaning "Tall Pine" in Ho-Chunk language, reaches a maximum depth of 108 m (355 ft). Its origins as a taconite mine, operational until 1983, have shaped a unique underwater landscape for divers.
At Wazee Lake, the ambient air temperature is currently recorded at 17.1°C. This dive site in United States is operating under normal seasonal weather patterns. Familiarize yourself with the local topography prior to navigating.
Dive Site Coordinates
44.2922, -90.7311
Dive Site Characteristics
Key Dive Site Facts
Dive Site Overview
Descend into Wazee Lake's clear freshwater depths, where remnants of its mining past create a distinctive dive experience. Once an active iron quarry, the lake now offers Caribbean-like visibility averaging 9-12 m (30-40 ft) during summer months.
Divers can explore circular haul roads, massive boulders, and shear cliff faces that present varied challenges from novice to advanced levels. Platforms for training are strategically placed at 10 m (35 ft), 21 m (70 ft), and 27 m (90 ft).
Additionally, various artifacts like chains, pipes, and iron shovel teeth are found throughout the pit. Divers also discover intentionally placed objects such as a shark statue, an outhouse, and a buoyancy course, enriching the underwater exploration. The average dive depth for recreation typically ranges from 24-30 m (80-100 ft).
Best Time to Dive
Diving opportunities at Wazee Lake span the calendar, though conditions vary significantly by season. Spring and fall present cooler air temperatures, ranging from 2.4°C (36°F) in March to 18.7°C (66°F) in September, with rainfall generally moderate. Summer months, particularly July and August, offer the warmest air at approximately 21-22°C (70-72°F) and typically have the highest rainfall averages, around 3.8 mm (0.15 in). During these warmer periods, surface water temperatures can reach 21°C (70°F). Colder months, from December to February, see air temperatures drop below freezing, averaging -8.2°C (17°F) to -3.8°C (25°F), with minimal rainfall. Ice diving is possible in winter, presenting a stark contrast to the warmer open-water seasons and requiring specialized training and equipment.
Climate Historical Averages
Monthly records compiled from satellite and marine observation nodes over the last 3 years. Data provided by Open-Meteo and MET Norway.
Dive Experience & Conditions
Entering the water at Wazee Lake reveals a distinct descent profile, characterized by multiple thermoclines. Surface temperatures can hover around 21°C (70°F) in summer, but divers will encounter a noticeable temperature drop below the first thermocline, which averages around 9 m (30 ft). Deeper sections will encounter a second thermocline at approximately 18 m (60 ft) where the water temperature plunges to a chilly 1°C (34°F). The gradual slope from paved parking areas makes shore entry accessible at various points, including The Wall, Bluegill Alley, and Sherwood Forest. Underwater features include sunken forests and winding roads, remnants from the quarry operation. These structures provide complex navigation for experienced divers and simpler pathways for beginners. Visibility generally maintains a good standard throughout the recreational depth range.
Dive Difficulty & Safety Guidelines
Navigating Wazee Lake requires adherence to specific protocols and awareness of its unique challenges. Daily or annual dive and vehicle fees are mandatory for all divers and must be paid before entering the lake; self-registration is available if no attendant is present. Considering the lake's significant depth and cold temperatures below the thermocline, proper deep diver training and equipment are crucial, especially for exploring beyond shallower recreational depths. The lake is a non-motorized body of water, which helps preserve its clear water quality. While the site accommodates various skill levels, the colder water and potential for rapid temperature drops necessitate careful dive planning and appropriate thermal protection. Understanding the site layout, including training platforms and underwater features, contributes to a safer dive.
Recommended Equipment
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Verified equipment recommendations for this dive site are being reviewed and may be added as additional source checks are completed.
Recommended Dive Suit
Repeated dives during the same day can gradually reduce overall body warmth.
Because recent water temperature readings are not available for Wazee Lake, the guidance below is based mainly on current air conditions and seasonal expectations. Current surface air temperatures are roughly 17°C (63°F). Based on regional estimates and current weather, the likely required exposure protection is a 5mm or thicker wetsuit. Note that local currents and upwellings can alter this. A hood or vest is suggested for sensitive divers due to surface winds.
Conditions may fluctuate slightly depending on wind and weather patterns. A significant temperature drop is forecast; strongly suggest bringing a backup warmer suit option. A thicker wetsuit may be worth considering for extended dives.
Conditions last reviewed: 12:00 using the latest environmental data.
Dive Logistics & Preparation
Hyperbaric Chamber
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Entry Requirements
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Currency
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Marine Life at Wazee Lake
Despite its quarry origins, Wazee Lake supports a diverse aquatic population. Divers frequently encounter various fish species, including rainbow, brook, and brown trout, alongside bluegills, suckers, catfish, and smallmouth bass. Fish cribs have been strategically placed throughout the lake, enhancing habitat and offering more opportunities for marine life observations. These structures contribute to the lake's ecological balance and provide interesting focal points during dives. While not a marine environment, the freshwater ecosystem here is active and provides consistent sightings for divers exploring the submerged quarry landscape.
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Frequently Asked Questions
What is the maximum depth of Wazee Lake?
Wazee Lake is the deepest inland lake in Wisconsin, reaching a maximum depth of 108 m (355 ft). This depth extends well beyond recreational diving limits.
Are there fees required to dive at Wazee Lake?
Yes, both daily or annual dive fees and vehicle admission fees are required. These must be paid before entering the lake, with self-registration options available at the contact station.
What are the water temperatures like in Wazee Lake?
Surface temperatures can reach 21°C (70°F) in summer. Below the first thermocline, around 9 m (30 ft), temperatures drop, reaching as low as 1°C (34°F) below a second thermocline at approximately 18 m (60 ft).
What kind of visibility can I expect?
Wazee Lake offers notable clarity for a freshwater lake, with visibility averaging 9-12 m (30-40 ft) during the summer months. This Caribbean-like visibility enhances the diving experience.
Are there underwater features for divers to explore?
Yes, divers can find remnants from the lake's mining past, including haul roads, chains, pipes, and massive boulders. Additionally, platforms are situated at 10 m (35 ft), 21 m (70 ft), and 27 m (90 ft) for training, and various novelty items have been placed throughout the lake.
What marine life can be seen in Wazee Lake?
The lake hosts a variety of freshwater fish, such as rainbow, brook, and brown trout, as well as bluegills, suckers, catfish, and smallmouth bass. Fish cribs have been added to improve habitat and increase sightings.
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