1983
Tripartite Permanent Technical Committee (TPTC) Agreement in 1983 - allowed for establishment of TPTC
1991
Piggs Peak Agreement was signed the 1991 - resulted in the Joint Incomati Basin Study
1992
Komati River Development Treaty between Eswatini and SA (Joint Komati River Basin development plan, Komati Basin Water Authority, Maguga and Driekkopies dams)
1997
Bilateral agreement between Mozambique and SA to establish JWC
1998
Commitment & desire to develop formal water use agreement for the two river
basins that benefits all
1999
Treaty between Mozambique and Eswatini to coordinate discussions on issues of common interest
2002
Signing of Tripartite Interim Agreement for Cooperation on the Protection and Sustainable Utilisation of the Incomati and Maputo Watercourses (IIMA)
2007-2011
Grant from the Kingdom of the Netherlands for PRIMA I
2011
Agree to establish a RBO that aligns with SADC's principles on shared watercourses
2021
Agreement of establishment signed and establishmebt of Commission
2020-2023
Grant from the Kingdom of the Netherlands for PRIMA II