[1] The reserve lies to the northwest of the BR-429 highway from São Francisco do Guaporé to Costa Marques on the border with Bolivia.

[6] On 18 November 1991 a ban was placed on settlement, deforestation, professional fishing, logging, mining and other activities in the proposed 151,625 hectares (374,670 acres) Rio Cautário Sustainable Extraction State Forest.

This ban did not apply to the small farmers, rubber tappers and fishing people living in the area.

The decree creating the reserve noted the great pressure of predatory activity on forest areas occupied by traditional populations, which was causing irreversible loss of plant and wildlife resources, and exacerbating social conflicts.

[8] On 30 June 2004 an area of 142,776 hectares (352,810 acres) of federal land was transferred to the state of use in the extractive reserve.

[10] In January 2016 SEDAM announced findings of illegal activity in the previous quarter in nine units that benefited from ARPA in the state.

In the Rio Cautário State Extractive Reserve and the Serra dos Reis State Park they had seized a motorcycle, a tractor and six trucks loaded with 695 cubic metres (24,500 cu ft) of logs and 105 cubic metres (3,700 cu ft) of sawed timber, 930 wooden stakes and various camping and fishing items.

There is also a plan for community forest management created due to decline in demand for rubber.