Hartwells Lockstation is the second of three stations within the city limits of Ottawa. The Rideau River is to the east of the "lockstation on the other side of Carleton University. Besides the locks the only other engineering structure at Hartwells is the sluice/culvert chamber. It empties into an underground channel. Colonel By suggested in a report in 1832 that a small blockhouse should be built at Hartwells to protect the locks. His request was ignored and not until 1852 was there any mention of a defensible structure at the locks. An inspection of the lock reported a lockmaster's house "built of rough masonry stone and roofed with tin" Lockstation services: parking, charts and permit sales, on-site identification, picnic areas, day use docking, boater camping and overnight mooring.