Ключевые слова: agriculture, background, blue, bulrush, california, canal, cattail, channel, checks, colorado, concrete, ditch, doublecrop, drainage, farm, farming, farmland, field, flow, garden, gateway, green, gutter, irrigation, mud, muddy, nature, offseason, paddy, plot, pump, reed, rice, river, system, technology, tropical, water, watercourse, waterways,