Sungai alam (natural creek) in P6 2N
The Sungai alam with view upstream
The same position near the sungai alam on 3 February 2005
Tertiary structures in P6 3N still have severe leakage problems
TC3 SPD structure has severe problems
Farmers made a bridge over the SPD themselves
The SDU in P8 12S is not dead-eneded as told before to us.
Picture taken on the same location as the previous one in P8 12 S
P8 12 S SDU side on 22 Jan.2005.
P8 12 S on 25 Jan. 2005 SDU side.
The LWMTL team together in the Office
GIS sytem installed
The dead-ended Tertiary canal TC 3 of P10 2S
This is the dead-ended canal TC4 of P10 2S Saleh
TC 3 is here connected with the SDU through a tertiary structure.
In P10 2S the broad-cast seed is mixed with soil under dry conditions
Detail of the previous picture.
Farmers paid the Contractor to make this dike in the Sungai Alam to prevent deep flooding during the rainy season. We expect that the dike will brake down when it is water saturated and there are large water level differences between upstream and downstream during the wet season. We propose to install pipe culvert in the dike to prevent large water level differences upstream/downstream. Also more protection with cement/sand bags of the dike is required.
At the moment the water levels in the Sungai alam are still low. But in the wet season it will reach easily levels equal to land level and large water level differences will occur during low tide.
The dike has survivied the high floods in December 2004 and January 2005! Filling the dike with good quality soil might be important. Also the distance between digged hole for soil supply and the dike should be large enough
We wonder if not complete changes in the structure build-up are required. At the moment we will try to solve the problem with re-filling the structures (may be including cement bags) and close all crevices.with cement.
A typical example of the problems with the soft soil. We hope we can solve this problem by extending the structure-length and reducing its pressure on the dam by it.
The Kelompok Tani (Farmers Group) made this bridge themselves this dry season. It looks strong.
It appears that there is a connection to the SPD at a distance of a few hundred meters from the river. This area shows severe flooding problem in the wet season. A Diver (automatic water level recorder) will be installed here.
It looks that this is a low point where during flooding severe erosion takes place at low tide. When the proposed dike is constructed, a flapgate structure set at drainage only will be required here crossing the dike.
Flapgate operated om supply. Note the repair of the bund near the SDU with clay-bags. This connection with the dike along the SDU and the tertiary structure is critical, as the pressure will be high during high tides.
Flapgate operated on drainage. Farmers need dryer fields especially during springtide.
Training of staff LWMTL in GIS/MIS syetem developed by LWMTL expert team. February 2005
A dead-ended canal will be double connected for TC3 and TC4 this year. It requires a crossing with the road and a new extra tertiary structure at the previous dead-ended canal
The dead-ended cnal has been connected to TC3 in the previous IISP project. Now the TAM project has put a wooden structure in the connection. This year however the dead-ended canal will be connected straight to the SDU
At high tide water from the SDU enters the tertiary canal. In the end and middle part of this Tertiary canal much lower areas are found. This requires a double connection with the SPD to prevent too high water levels in the low areas.during high rainfall. Further this high area near the structure needs a drop stucture at the transition to the low areas(drop structure could be made from cement/sand bags) to keep water levels high in these relatively high lying rice fields of TC3 near the SDU
The seed is mixed with soil while the rains are expected soon, but conditions are presently still dry. The white powder seen at various spots is Dolomite that is mixed with the soil. These soils in P10 2S were previously very acid.
The broad-casted seed still has to be mixed here with soil, using the rake plough
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Sungai alam (natural creek) in P6 2N
Farmers paid the Contractor to make this dike in the Sungai Alam to prevent deep flooding during the rainy season. We expect that the dike will brake down when it is water saturated and there are large water level differences between upstream and downstream during the wet season. We propose to install pipe culvert in the dike to prevent large water level differences upstream/downstream. Also more protection with cement/sand bags of the dike is required.