Ditch and canal liner assembly

A ditch liner having a longitudinal direction and a transverse direction perpendicular to the longitudinal direction, the ditch liner comprising:

• a first corrugation extending in the transverse direction, and having
• a first angled section having a width in the longitudinal direction,
• a second angled section having a width in the longitudinal direction, and
• a central section positioned between the first angled section and the second angled section, and having a width in the longitudinal direction;
• and
• a second corrugation extending in the transverse direction and having
• a first angled section having a width in the longitudinal direction,
• a second angled section having a width in the longitudinal direction, and
• a central section positioned between the first angled section of the second corrugation and the second angled section of the second corrugation, and having a width in the longitudinal direction,
• wherein the first angled section of the first corrugation is adjacent to the first angled section of the second corrugation in the longitudinal direction,
• the second angled section of the first corrugation is adjacent to the second angled section of the second corrugation in the longitudinal direction,
• the central section of the first corrugation is adjacent to the central section of the second corrugation in the longitudinal direction,
• the width of the central section of the first corrugation is equal to the width of the central section of the second corrugation at at least two locations along the transverse direction;
• and
• the width of the first angled section of the first corrugation is greater than the width of the first angled section of the second corrugation at a first location along the transverse direction.