《水利工程水费核订、计收和管理办法》第十五条规定:“受益范围明确的水闸、堤防、圩垸、海塘以及排涝等工程的管理单位,向受益的工商企业、农场、农户和其他单位收取工程维护管理费,其标准根据工程运行管理费和大修理费确定”。根据这个规定,考虑各受益对象的年产值,实行按比例分摊的办法,提出下列计算方 Article 15 of the Measures for the Verification, Accounting and Management of Water Conservancy Works Charges stipulates: “The management units of flood gates, dikes, embankments, seawalls, and drainage projects with a clear benefit range provide beneficial services to businesses, farms and farmers And other units charged engineering maintenance and management fees, the standard according to the project management fee and overhaul fee to determine. ” According to this provision, taking into account the annual output value of the beneficiaries, the pro-rata method is adopted and the following formula