Kalimantan Forests and Climate Partnership (KFCP) Design ...

Hydrological Rehabilitation
Hydrological modelling has been used to estimate likely peak flows and define potential locations and
the number of locations for canal blocking. Many dams, more than 350 are required to minimise head
differences to the proposed 0.20 cm within the 300 km of canals found in the area. Although four
designs are presented, a mixture of structures is required to establish a cost-effective canal blocking
system for the block. A key issue that will influence the approach to be taken is the possibility and
appropriateness of mobilising heavy equipment (excavators and bulldozers), which is a prerequisite
for the construction of compacted peat ‗hard‘ dams. Box dams of the sort that are constructed at
present in Block A NW are seen to require a high amount of financial resources as well as labour.
They are also time consuming to construct. Canal blocking, depending on the exact mix of structures
constructed as part of the dam system, is likely to exceed AUD 8 million. The logistics of dam
construction within the space of a few years suggests that a significant number of ‗soft‘ dams such as
the pallisade design will need to be constructed. Further, the key decision to be made is whether to
primarily build labour intensive box dams or compacted peat dams using heavy equipment. If three
years are allowed for dam construction, the KFCP would require between 15- 25 teams operational
for three years, which would require employment of between 1,000-1,500 persons each year.
Forest Rehabilitation
The rehabilitation planting program in Block A NW should take a succession-based approach
involving:
4-2 KALIMANTAN FORESTS AND CLIMATE PARTNERSHIP (KFCP) DESIGN DOCUMENT