The canal blocking model in the location #3 is V-shape. The canal blocking is
currently functioning well. The GWL points of observation were installed inside and
outside the canal blocking. Twelve pipes were installed perpendicular to the canal in
distance of 10 m each. The GWL was monitored manually and regularly.
GWL data shown that there were significant differences between the inside and
outside of the canal blockings, particularly in the peak of dry season (in September
2018). The GWL at the upstream and downstream section of the canal was 70 cm
and 10 cm, respectively. The average GWL between July–December 2018 is
presented in Fig. 21.8.
The canal blocking location #4 is in the RePeat area of KHDTK Tumbang Nusa.
This area was burnt repeatedly in 1997, 2002, 2009, and 2015. In this area, Shorea
balangeran seedlings were planted in the end of 2015. Twenty-three points of GWL
monitoring were installed at six planting blocks. In this location, the canal blocking
Fig. 21.7 The third location
of the canal blocking
21 Peatland Restoration in Central Kalimantan by Rewetting and Rehabilitation with. . .
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