Peatland flood protection engineering – April experience in coastal Riau

Authors:
J. Bathgate and T. Nainggolan

Book:
Proceedings of the 15th International Peat Congress

Venue:
Kuching

Keywords:
acacia-plantation, catchment-plan, flood-diversion-corridor, flood-duration-tolerance, flood-return-period, floodplain, geo-fabric, hydro-data, peat-dike

Documentfile:
ipc16p619-622a403bathgate.nainggolan.pdf

Summary:

SUMMARY

APRIL manages extensive peat soil concessions that include natural forest and plantation. Area for fiber plantations is limited and includes the margins of seasonal floodplains in a climate having 500 mm of rain in wettest months. It is highly desirable, now that no more concession land is forthcoming, to fully utilize all marginal land including floodplains. APRIL could find little previous experience of tropical peat engineering to draw on and so developed its own. A peaty-silt soil dike dating to 2007 has kept most floods out of 800 ha of floodplain plantation; it is now being rebuilt to larger dimensions. A first all-peat dike was completed in 2014. It has withstood floods to date enabling fiber production on 1,000 ha of floodplain, previously problematic, to be on track to full production…