1. All that water is working its way through that drainage network . 2. The Viso ica River, with its tributaries, forms the densest drainage network in Serbia. 3. The drainage network of this region is well developed. 4. Erosion, siltation of drainage networks and flooding result. 5. Revenues generated by this surcharge are insufficient to finance ONAS operations and maintain sewerage and drainage networks . 6. The drainage network is coarse and incised. 7. The expansion of drainage networks was an important technical aspect of Westward Expansion in the 19th century. 8. An extensive drainage network has been constructed to protect Wonnerup from flooding and to create agricultural land. 9. Following the aftermath of Typhoon Ketsana, the city began to dredge its rivers and improve its drainage network . 10. The Zone has an efficient drainage network and an incinerator for disposal of solid waste within the zone.
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