Althaus Creek is a tidal estuary located north of Townsville in Queensland, flowing between the communities of Saunders Beach and Bluewater. The creek sits within the Townsville City Council area and is subject to tidal influence, meaning water levels and access conditions vary with the tides.

There are two boat ramps providing access to the creek, positioned on opposite banks. The Saunders Beach boat ramp is located on the south bank at the end of Saunders Beach Boat Ramp Road, off Saunders Beach Road past Atoll Street, at GPS coordinates 19.15696° S, 146.59904° E. This ramp is tide-limited, has a single lane with a 10-degree slope, a pontoon, and parking for 15 cars with trailers. The Bluewater boat ramp sits on the north bank at 78 Jaloonda Road, Bluewater, at GPS coordinates 19.15709° S, 146.59856° E, with a single lane, a 7-degree slope, and parking for 15 cars with trailers. Both ramps are managed by Townsville City Council and rated to handle loads of up to 5 tonnes.

The most significant safety consideration for paddlers on Althaus Creek is the presence of estuarine (saltwater) crocodiles. Under the Queensland Crocodile Management Plan, Althaus Creek falls within Zone E, the General Management zone, meaning crocodiles displaying dangerous behaviour in the area are targeted for removal. In September 2022, a 3.2-metre male estuarine crocodile was captured and removed from the Althaus Creek landing area near Saunders Beach after it was observed approaching fishers and boats. The creek is also described as a busy fishing spot with a nearby camping area, which means paddlers should expect other water users, particularly around the boat ramp areas. Crocodile sightings should be reported to the Queensland Department of Environment and Science via the QWildlife app or by calling 1300 130 372. Paddlers are advised to follow CrocWise safety guidelines at all times when on or near the water.