Page - 299 - in Book of Full Papers - Symposium Hydro Engineering

The Planning and Solution to Mitigation The Flood Problem of Bogel River Efforts have been done 1. Jasa Tirta I Public Corporation has doing Bogel River Dredging Works in 2005-2006 by self-managed as follows: a. In 2005 : dredging volume 3,828 m3 b. In 2006, Period 1 : dredging volume 25.000 m3 c. In 2006, Period 2 : dredging volume 3.925 m3 The total length of the river was dredged from Kedung Bunder Bridge- Bacem Bridge 3600 m 2. Drain Oulet Construction Unut - Bogel River in 2005 3. Doing the emergency repair in several times Efforts to be Proposed 1. Preparation of a comprehensive study of Bogel River flood 2. Short Term Action in 2016 a. Emergency repair of Kedungunut river embankment b. Normalization Bogel River start from Gondanglegi Dam until Lodoyo Channel c. Periodically doing the normalization in river upstream : - Kedungpuring River, Margomulyo as long as ± 2 km - Kedungunut River, Bacem as long as ± 2 km - Pijeran River, Pandanarum as long as ± 3 km - Kedungriwuk River, Bacem as long as ± 2 km d. Repair of drainage channels in the township e. Overcome the domestic waste Sutojayan which often cause blocking under the bridge. 3. Middle Term-Long Term Action a. To evaluate the function and proposed irrigation dam on the upstream dam to be functioned as long storage. b. Make ponds / retarding basin for the water parking and the water storage tank for the community, because Bogel River is a perennial river / seasonal which is there are some water during the rainy season and dry during the dry season. c. Implement conservation in the upstream of the catchment area to reduce the run-off and erosion. d. Make short cut Bogel River to the downstream of Lodoyo weir (must be studied further). 4. Completing the hydrological observations station on the Bogel watershed a. Increasing the number of AWLR stations in the Bogel watershed b. Increasing the number of ARR stations in the upper of Bogel River, such as in the Mountains Kendeng c. Completion of the Early Warning System, which has been pioneered by Jasa Tirta I Public Corporation to be integrated with other agencies 299