Severe erosion has resulted in the past from bulldozer-constructed firelines in permafrost terrain. In an attempt to reduce erosion and gullying, several water-barring techniques and seeding treatments were tested on permafrost and nonpermafrost catlines. Standard water bars and berm dikes constructed at 30- to 50-yeard intervals on sloping terrain were effective in reducing erosion. Vegetative check dams on permafrost soils were ineffective. Seed growth was more successful on permafrost than on nonpermafrost soils. Fertilized lines resulted in better seed success than unfertilized lines.