The Douglas River flows through the Douglas Daly region of the Northern Territory, approximately 200 km from Darwin and 140–193 km from Katherine. The river is protected in part by two adjacent conservation areas: Tjuwaliyn (Douglas) Hot Springs Park and the Douglas River Esplanade Conservation Area. Along its course, springs emerge from underlying groundwater aquifers, creating a varied sequence of quiet pools, rushing cascades, thermal pools, and sandy beaches, alongside unusual limestone formations including a natural arch formation known as The Arches.

The dry season, running from May to September, is the recommended time to visit. Heavy rains during the wet season (October to April) can cause road closures, and access tracks into both parks are formed gravel or dirt roads suitable for dry season travel only. The last 7 km into Tjuwaliyn is a formed gravel road; towing of caravans and trailers is generally possible in dry conditions. Access to the Douglas River Esplanade Conservation Area is via Oolloo Road off the Old Stuart Highway.

A notable safety consideration for anyone entering the water is the presence of thermal springs that can produce very hot water. Visitors are advised to test water temperature before entering, and swimming is best suited to cooler pools located approximately 200 metres upstream and downstream of the main thermal area. Swimming is not permitted in a designated sacred site within the park. Rangers monitor water quality in swimming areas and may close them at short notice.

The river corridor supports a large variety of birdlife and other wildlife, drawn by the permanent water and diverse riparian vegetation including tall paperbark trees. The surrounding landscape is dry woodland. Paddling in the spa pools is an activity within the Douglas River Esplanade Conservation Area. Along the river, there are nine bush campsites and three designated day-use picnic areas, with facilities including barbecues and toilets. Visitors to Tjuwaliyn are requested to check in at the park office to be allocated campsites. Camping fees apply.

Butterfly Gorge Nature Park lies 17 km beyond Tjuwaliyn Hot Springs along Oolloo Road and requires a 4WD vehicle to access.