Skip to content
Go to Dive Champ home pageDive Champ LogoDive Champ

Coral Key Lake

Discover an exceptional dive site located in the stunning surroundings just outside of Denver, CO. This 4.5-acre lake offers divers a depth of 44 feet, perfect for exploring its captivating underwater world. The visibility here varies throughout the year, ranging from 4 to 22 feet from April to July, and 4 to 15 feet from July to September.

Immerse yourself in the cool waters of this dive spot, as the temperature transitions from 50°F in March to 55°F in April, reaching a delightful 72°F from July to September. Underwater, you'll encounter a diverse range of captivating wildlife, including turtles, bass, Bluegill, catfish, crawdads, and perch.

As you explore the depths, you'll find scuba platforms strategically placed to enhance your diving experience. In the summer of 2019, a purpose-built structure was submerged for wreck training, adding an exciting dimension to your underwater adventures. The dedication to water quality is evident, with ongoing measures in place to improve visibility for scuba enthusiasts.

Not only is this site perfect for diving, but it also offers additional recreational activities. A walking path surrounds the lake, providing the ideal setting for dog walking and bird watching. Moreover, various novelties, such as skeleton divers and sculptures, are being installed to add a touch of excitement and wonder to your diving escapades.

Convenient parking facilities are available, ensuring easy access to this remarkable dive site. Don't miss the opportunity to explore this hidden gem of the United States. Plan your visit to this location in Reed Street, Arvada, Jefferson County, Colorado, 80002-4617, United States, and embark on an unforgettable diving adventure suitable for both beginner and advanced divers.

Diving Conditions Score for Coral Key Lake

5.9
Average

Average conditions, be alert.
The score is based on a calculation of the current weather and sea conditions.

Dive Site Overview for Coral Key Lake

Depth

6m

Visibility

2m

Experience Level

beginner
advanced

Weather Conditions for Coral Key Lake

Wave Height

1m

Wind Speed

4.8 m/s

Water Temp

18°C

Visibility

72.6km

Cloud Cover

0%

Wave Period

8s

Air Temperature

16.8°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Coral Key Lake
Alpha

Dive Score Chart for Coral Key Lake

Best time to dive: 10:00 with score 7.733333333333333/10. Water conditions: Waves 1m, Wind 3 m/s.Best night dive time: 2:00 with score 6.903333333333333/10.

Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.

Sunrise at Coral Key Lake: 06:00
Sunset at Coral Key Lake: 18:00

Optimal diving conditions at Coral Key Lake are affected by daylight hours. Sunrise occurs at 06:00 and sunset at 18:00, which impacts visibility and water temperature for scuba diving and snorkeling.

🌞
Best Overall
10:00

Score: 7.7/10
Waves: 1m (8s), Wind: 3 m/s

🌙
Best Night
2:00

Score: 6.9/10
Waves: 1m, Wind: 6.3 m/s

Seasonal Analysis for Coral Key Lake
Alpha

Historical patterns and best seasons for diving at Coral Key Lake

The dive score combines all factors to rate overall diving conditions throughout the year. Higher scores indicate better diving conditions.

Monthly Dive Score Analysis - Seasonal Diving Conditions

Higher values indicate better diving conditions

Seasonal DiveScore Chart

This chart displays monthly diveScore data throughout the year, showing seasonal patterns. The data is presented as a bar chart with an overlaid line graph.Dive scores range from 1 to 10, with 10 being optimal conditions.

Higher values indicate better diving conditions

Best Season for Coral Key Lake

Winter

Avg. Score: 8.7/10

Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.

Best Months for Coral Key Lake

January
Score: 8.9
February
Score: 8.7
December
Score: 8.4

Ideal Conditions for Coral Key Lake

Water Temp

Thermometer Emoji

24.3°C / 75.7°F

July

Visibility

Telescope Emoji

16.4m / 53.8ft

January

Wave Height

Wave Emoji

0.7m / 2.3ft

January

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Coral Key Lake

Coral Key Lake shows typical northern hemisphere patterns with July being the warmest month (24.3°C) and February the coldest (-8.2°C). The calmest conditions typically occur in January with average wave heights of 0.7m and wave periods of 8.0s. The most comfortable wave conditions are in January with a low wave steepness ratio, creating gentler swells. January offers the longest wave periods (8.0s), creating more comfortable and predictable conditions for boat entries and exits. Ocean currents are slowest in January (0.5m/s) and strongest in January (0.5m/s). January is usually the driest month with 0.0mm of precipitation. For beginners, the best time to visit would be during January to March, when ocean conditions are calmer with long-period waves and currents are typically weaker. Experienced divers might enjoy the challenges and potentially better visibility during the shoulder seasons, with moderate currents that can improve marine life encounters.

Scoring Legend:
9-10 (Excellent)
7-8 (Good)
5-6 (Average)
3-4 (Poor)
1-2 (Dangerous)

Last updated: 1 min. ago - Jun 21, 2026

Note: This dive site is not a verified dive site. Please dive with caution. This dive site might have incorrect information by the community.

6 Dive sites near Coral Key Lake in

Find more dive sites in United States

United StatesUnited States

United States

Got feedback?

Help us improve this dive site by giving us feedback.