Landside Hazard Zonation Mapping Case Study
Landside hazard zonation mapping (LHZ) is helpful way to evaluate the landslide hazard prone areas for that reason appropriate mitigation measures could be adopted and environmental restoration programs can be pursued (Ambalagan, 1992). These maps may also assist planners to select suitable locations for construction practices. Even if the land slide hazard areas cannot be complity avoided, their identification in the initial stages of planning may help to assume suitable preventive actions.
The information emanating from this research study is expected to be of large importance in supporting the progress of the decision making processes in the project area related to landuse planning and other design s of developmental activities. The government can be benefited
from …show more content…
Major sub-tributaries in the up-stream side of the study area include Jira, Retmet, Mofer Wuha, Beressa and Chancha rivers (Fig.
1b).
1.8.3 Rainfall distribution in the study area
According to the outcome from the stations it is observed that most of the major precipitation in the study area occurs in the summer season mostly from June to September, while, there is a bit low rainfall incident in November and January. The rainfall peaks in July and August at about 330 to 520 mm per month. Further, it is observable that rainfall during the dry season from October to May tends to be low. The long-term average annual precipitation from Alem
Ketema meteorology station is 1038 mm/year for the twenty assessed years. Long-term precipitation data is given in Table 1.1, and Fig. 1.2, respectively.
The long-term precipitation at Alem Ketema is shown in Fig. 1.1. It can be seen that there is some fluctuations of rainfall from 1992 to 2013 G. C. with the least annual rainfall of 884.6 mm/year in the year 1995 and the highest annual rainfall of 1209 mm/year in 2000 G. C. An average long-term annual rainfall from 1992 to 2013 G. C. is 1038 mm/year.
1.8.4
The information emanating from this research study is expected to be of large importance in supporting the progress of the decision making processes in the project area related to landuse planning and other design s of developmental activities. The government can be benefited
from …show more content…
Major sub-tributaries in the up-stream side of the study area include Jira, Retmet, Mofer Wuha, Beressa and Chancha rivers (Fig.
1b).
1.8.3 Rainfall distribution in the study area
According to the outcome from the stations it is observed that most of the major precipitation in the study area occurs in the summer season mostly from June to September, while, there is a bit low rainfall incident in November and January. The rainfall peaks in July and August at about 330 to 520 mm per month. Further, it is observable that rainfall during the dry season from October to May tends to be low. The long-term average annual precipitation from Alem
Ketema meteorology station is 1038 mm/year for the twenty assessed years. Long-term precipitation data is given in Table 1.1, and Fig. 1.2, respectively.
The long-term precipitation at Alem Ketema is shown in Fig. 1.1. It can be seen that there is some fluctuations of rainfall from 1992 to 2013 G. C. with the least annual rainfall of 884.6 mm/year in the year 1995 and the highest annual rainfall of 1209 mm/year in 2000 G. C. An average long-term annual rainfall from 1992 to 2013 G. C. is 1038 mm/year.
1.8.4