是的，退水期的时候需要加强监测和巡逻工作。
退水期的大堤往往容易出现险情。[{'character': '退', 'pinyin': 'tuei4', 'highest pitch': 11.62, 'lowest pitch': 9.75, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '水', 'pinyin': 'shuei3', 'highest pitch': 9.75, 'lowest pitch': 6.03, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '期', 'pinyin': 'qi1', 'highest pitch': 9.51, 'lowest pitch': 6.03, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 9.06, 'lowest pitch': 7.47, 'duration': 0.11, 'prosody hierarchy': '#1'}, {'character': '大', 'pinyin': 'da4', 'highest pitch': 9.38, 'lowest pitch': 7.47, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '堤', 'pinyin': 'di1', 'highest pitch': 9.27, 'lowest pitch': 8.87, 'duration': 0.27, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.09}, {'character': '往', 'pinyin': 'uang2', 'highest pitch': 8.5, 'lowest pitch': 6.92, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '往', 'pinyin': 'uang3', 'highest pitch': 8.76, 'lowest pitch': 6.4, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '容', 'pinyin': 'rong2', 'highest pitch': 7.52, 'lowest pitch': 6.35, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '易', 'pinyin': 'i4', 'highest pitch': 7.86, 'lowest pitch': 6.69, 'duration': 0.13, 'prosody hierarchy': '#1'}, {'character': '出', 'pinyin': 'chu1', 'highest pitch': 9.56, 'lowest pitch': 6.69, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '现', 'pinyin': 'xian4', 'highest pitch': 9.85, 'lowest pitch': 7.88, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '险', 'pinyin': 'xian3', 'highest pitch': 8.1, 'lowest pitch': 5.0, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '情', 'pinyin': 'qing2', 'highest pitch': 8.68, 'lowest pitch': 5.24, 'duration': 0.36, 'prosody hierarchy': '#4'}]