X0101 EFFECT 33 LIVE 2016-09-21 14:00:00

S-3

0001384072 Vanguard Natural Resources, LLC 333-210329 0001464666 VNR Finance Corp. 333-210329-13 0001468367 Vanguard Natural Gas, LLC 333-210329-12 0001468366 VNR Holdings, LLC 333-210329-11 0001633675 Vanguard Operating, LLC 333-210329-10 0001445198 Encore Clear Fork Pipeline LLC 333-210329-09 0001461334 Eagle Rock Energy Acquisition Co. II, Inc. 333-210329-08 0001461333 Eagle Rock Upstream Development Co II, Inc. 333-210329-07 0001461332 Eagle Rock Acquisition Partnership II, L.P. 333-210329-06 0001461338 Eagle Rock Energy Acquisition Co., Inc. 333-210329-05 0001461337 Eagle Rock Upstream Development Company, Inc. 333-210329-04 0001461336 Eagle Rock Acquisition Partnership, L.P. 333-210329-03 0001461330 Escambia Operating Co. LLC 333-210329-02 0001461329 Escambia Asset Co. LLC 333-210329-01