- Research study of sedimentation on Lake Loakang and Mahakam River at East Kalimantan, May 2002 – December 2002.
- Research on impact of climate change on Lake Maninjau, June 2002 – October 2002.
- Research on the change of phytoplankton composition and eutrofication level on Lake Maninjau, West Sumatera, June 2001 – October 2002.
- Research on characteristic of hydrology on Lake Maninjau, West Sumatera. June 2001 – September 2001.
- Research on bathymetri and geomorphology on Lake Maninjau, West Sumatera. June 2001 – September 2001.
- Research on Bangka-Belitung coastal sedimentation, Klabat bay, August 2001 – July 2003).
- Research study for hydrology response of land use and watershed changing in Ciliwung River, West Java – Preliminary. July 2001 – September 2001.
- Involved in CREST (Core Research Evolution Science and Technology) Project for small stream investigating in Japanese forested watershed, April 2005 – May 2008.
- Research study on the changes in stream water temperature during rainfall events at Aichi, Kochi, Mie, and Tokyo regions, April 2008 – August 2009.
- Research study on the changes in stream water temperature and water quality parameters during rainfall events at Aichi, Kochi, Mie, and Tokyo regions, April 2009 – January 2010.
- Research study on the water temperature characteristic at Situ Cibuntu, Cibinong – Indonesia, 2009 – 2010.
- Research study on the water temperature characteristic at Mahakam River, Indonesia, 2009- 2010.
- Research study for the impacts land use changes in upstream Cisadane watershed on sedimentation rates and discharge, 2011 – now.
- Research study on increasing resilience of coastal ecosystems and communities, small Islands and surrounding waters in Indonesia: hazard mitigation and adaptation of rise sea-level from high-impact global climate change and extreme events, 2011 – now
