Long considered nature's thoroughfare for pioneer settlement and development, the Napa River played a major role in the growth and prosperity of Napa County. From its headwaters near Mt. St. Helena to its southern mouth merging with San Francisco Bay, the river contributed significantly to the welfare of those along its banks. Early riverbank residents included Native Americans and pioneer settlers who took advantage of the river's abundant supply of fish, fowl and game for daily sustenance. Later, riverboat steamers and ferries navigated up and down the river, offering reliable transportation and shipping. Passengers used these vessels to travel from the San Francisco Bay area to Napa Valley resorts and to connections with stage and rail services. Regional commerce relied on water transport to ship lumber, agricultural goods, livestock and textiles, and numerous wharves were constructed along the river to provide docking for waterway commerce. Although the river's role in Napa Valley life is not as obvious today, the beauty and legacy of its waters remain integral to the ambience of the Napa Mill. A flood control project was first envisioned by Captain A. Hatt in the 1880's, and he was the first builder on this site.