The lake was constructed in the 1970s primarily as a retention basin to provide flood protection for the Sulm Valley.
The water surface area covers 40 hectares, making it the most significant water-based recreation site in the Heilbronn district.
The reservoir is managed by the Breitenauer See Water Association, which coordinates both flood safety and leisure infrastructure.
The lake features a specific 'nature zone' on the eastern shore designed to protect local bird populations and aquatic habitats.
The onsite campsite offers over 400 pitches, including permanent and seasonal slots, making it a hub for regional tourism.
Breitenauer See is the largest recreational lake in the northern region of Baden-Württemberg, spanning approximately 40 hectares. Located in the Sulm Valley, the lake serves as both a flood control reservoir and a destination for swimming, water sports, and camping. The area features a designated sandy beach, extensive sunbathing lawns, and a dedicated non-swimmer area. Amenities include a large campsite, playgrounds, and various catering outlets located directly at the waterfront. The surrounding landscape is characterized by the rolling vineyards typical of the Obersulm area. Water quality is regularly monitored by local authorities to ensure it meets public health standards for recreational swimming. A circular trail surrounds the lake, offering a path for walking and cycling.
The wooden jetty located on the northern shore provides a clear perspective across the entire lake with the vineyards in the background.
Arrive early on sunny weekends, as the parking areas near the lake often reach capacity before midday.
Utilize the designated barbecue areas if planning a group meal, as open fires are strictly prohibited on the lawns.
Bring water shoes, as the lake bed can be uneven near the shore.
Do not attempt to swim in the flood retention areas marked for technical water management rather than recreation.
The bathing and recreational facilities are primarily open during the spring and summer months; access is restricted or minimal during winter.
Strictly follow the 'no grill' zones on the lawns; keep dogs on a leash in designated areas and excluded from the main swimming beach.
