GREAT WATER SUPPLY OF SONOMA. Sonoma is a well-watered country. Through all its valleys there are running streams proportioned in volume to the catchment which supplies them. Russian river, the largest in the county, enters it from Mendocino, flows southeasterly for twentymiles, turns west and finds its w-ay to the Pacific ocean through a depression in the coast range. The streams of the smaller valleys for twenty miles north and an equal distance south flow into and through its channel to the sea. Excepting Petaluma. Sonoma and the Gualala vallevs. it drains the entire country. There are innumerable springs of fresh and mineral water in the county. Among the latter the most noted are the Geysers, Lytton and Taylor’s White Sulphur springs, near Santa Rosa.