The　dynamic　control　bound　of　flood　limited　water　level　(FLWL)　is　a　fundamental　and　key　element　for　implementing　reservoir　FLWL　dynamic　control.　Due　to　the　uncertainty　of　the　inflow　and　the　dimensional　increase　of　the　reservoirs,　the　calculation　of　the　dynamic　control　bound　of　FLWL　becomes　more　and　more　complicated.　A　new　model　that　considers　capacity　compensation　regulation　and　the　uncertainty　of　flood　spatial　pattern　(FSP)　for　a　serial　multipurpose　reservoir　system　is　developed　to　calculate　the　dynamic　control　bound　of　FLWL.　This　model　consists　of　three　modules:　a　compensation　regulation　module　to　analyze　the　feasibility　to　raise　the　FLWL　and　calculate　the　probable　maximum　upper　bound　of　the　FLWL,　a　risk　control　module　containing　a　risk　constraint　to　control　flood　risk　and　a　Copula　function　to　describe　the　uncertainty　of　the　FSP,　and　a　simulation　operation　module　to　simulate　the　flood　control　operation　for　cascade　reservoirs.　The　proposed　model　was　applied　to　Pankou-Huanglongtan　cascade　reservoirs　in　Du　River　basin.　The　application　results　showed　that:　1)　the　proposed　model　could　give　a　sufficient　consideration　about　the　uncertainty　of　the　FSP,　thus　a　safe　and　reasonable　dynamic　control　bound　of　FLWL　was　derived.　2)　the　upper　FLWL　of　Huanglongtan　reservoir　could　rise　up　to　247.64　m　from　247.00　m　without　increasing　flood　control　risk　and　Huanglongtan　reservoir　could　generate　9　and　7　billion　kW.h　extra　hydropower　energy　during　flood　season　in　wet　year　2000　and　in　dry　year　1994,　respectively.