trailing corrugation the leading corrugation is formed with a substantially triangular cross section having a rounded apex the trailing corrugation in a corrugation segment is formed with a substantially frustoconical cross section having a height less than the height of the extended corrugation also included is a connector for contributing to interconnecting liner sections end to end a compressibly resilient gasket is included for contributing to sealing the liner sections this abstract is provided to comply with rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure but this abstract is not to be used to interpret or limit the scope or meaning of any claim application_number US 28182205 A description as shown in fig1 a 6e a water management system 10 is provided that in its broadest context includes a plurality of compressibly connectable liner sections for lining a ditch the plurality of compressibly connectable liner sections is formed with corrugations a plurality of corrugation couplers is formed in the corrugations for connecting the plurality of liner sections end to end the plurality of corrugation couplers includes a monolithically formed succession of adjacent extended corrugations and foreshortened corrugations the water management system also includes means for sealing abutting corrugation couplers also included is a connector such as a threaded rivet for affixing adjoining corrugation couplers an anchoring device insertable through the plurality of compressibly connectable liner sections is provided for securing the water management system in the ditch the extended corrugations include a substantially triangular ridge.