The average land elevation is above sea level. Its peak is above the Venusian average surface elevation. The island is mountainous with the highest elevation reaching over . Away from downtown the terrain gains elevation quickly. Lake Titicaca has a surface elevation of . Lake Erie has a mean surface elevation of . Agriculture varies depending on rainfall, irrigation, soil, elevation, and temperature extremes. It rises about south of Lake Superior (elevation ). Snowfall is scant except at the higher elevation edges. The annual snowfall averages between depending on elevation. The highest elevation on the island is . An elevation between defines this planting area. Bell Canyon sits at an elevation of . The lake covers at its full pool elevation of . The higher the elevation, the cooler the evenings.