Santiago Creek spends most months as a dry wash of cobbles and willows, then a winter storm sends water racing down its bed and the creek trail through Orange seems to wake all at once. Lake Management minds the lawns of Orange, where those rains are the season's big event and grass answers them with a rush of new growth. Along the creek, Hart Park's shade trees and open lawns hold the morning chill, and at a January sunrise the dew there shines like scattered glass. Keeping a yard in step with those surges means mowing on time, trimming the borders and clearing the walks of whatever the storm brought down. When the sky rinses clear behind the storm, grass cut that very morning is one of the quiet pleasures of a Southern California winter.