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., ", ') ..,....--. ">-". ,.J TABLE OF CONTENTS (Cont'd) :u:n.g 6.7 PARAGRAPH Drainage Structure Details Checklist Drainage Structures Exhibit VIa SECTION VII - GRADE CONTROL STRUCTURES 7.1 Description 7.2 Concrete Drop 7.3 Rock Drop Structures 7.4 Bed Grade Control Structure Sta 305+00 7.5 Drop Structures for Tributaries 7.6 Operation 7.7 Maintenance 7.7.1 Concrete Drop (Union Avenue Weir) 7.7.2 Rock S111s Checklist Grade Control Structures Exhibit VIla Checklist Union Avenue Weir Exhibit Vllb 8.1 8.2 8.3 9.1 9.2 9.3 9.4 9.5 9.6 9.7 SECTION VIII - AGGRADATION AND DEGRADATION Aggradation 8 . 1. 1 Loca tion 8.1.2 Brown Ditch Weir 8.1.3 Possible Effects in Project Performance 8.1.4 Maintenance Degradation 8.2.1 Location 8.2.2 Possible Effects on Project Performance 8.2.3 Maintenance Sedimentation Investigations 8.3.1 Survey Frequency 8.3.2 Sediment Range Identification Exhibi ts SECTION IX - SUKKARY OF OPERATION DURING FLOOD EMERGENCY Introduction Project Operation During Floods 9.2.1 Channels 9.2.2 Drainage Structures Flood Forecast Flood Information Flood Allert Local Organization for Operating During Floods Assistance From the Corps of Engineers During Serious Flooding TC-3 PAGE NO. VI-6 VII-l VII-l VII-l VII-2 VII-2 VII-2 VII-2 VII-2 VII-3 VIII-l VIII-l VI II - 1 VIII -1 VI II-l VIII-l VIII - 2 VIII-2 VIII-2 VIII-2 VIII-2 VIII-3 IX-l IX-l IX-l IX-2 IX-2 IX-3 IX-S IX-S IX-S