DamAge: Thirteen Moons

The global village has been razed.
Shadows of Armageddon recede and a world without borders is reborn. Like the American pioneers of the 19th century, survivors struggle to imagine life beyond the next mountain range.
In the Puget Sound region of the Pacific Northwest, the profits are flowing for H2O Inc., a business dealing in potable water. Contamination of natural sources by man-made disaster has created the company's unquenchable thirst for greater volumes and unadulterated forms of the resource.
Blocking the company's path are scattered remnants of human society. From the basalt scablands of Central Washington to the cedar forests of the Idaho Panhandle, isolated tribes of people must learn to trust each other again to avoid the same mistakes made a half-century earlier. The task of building this trust befalls a reluctant warrior, an incorrigible horseman and a beautiful mariner.
It will take all three to unify the tribes, but only one to lead them all.