_id id   canal_id   dcode   canal_name   type_canal   start_location   end_location   length_canal   width_avg   depth_avg   invade_canal   permanent_dam   owner_dept   water_quality   date_dredged   remark   adddate   updatedate   colspacer
id canal_id dcode canal_name type_canal start_location end_location length_canal width_avg depth_avg invade_canal permanent_dam owner_dept water_quality date_dredged remark adddate updatedate