diff --git a/src/main/java/com/gunshi/project/xyt/service/ReservoirWaterService.java b/src/main/java/com/gunshi/project/xyt/service/ReservoirWaterService.java
index c653282..e96f5c9 100644
--- a/src/main/java/com/gunshi/project/xyt/service/ReservoirWaterService.java
+++ b/src/main/java/com/gunshi/project/xyt/service/ReservoirWaterService.java
@@ -73,7 +73,7 @@ public class ReservoirWaterService {
                     continue;
                 }
                 Map<BigDecimal, BigDecimal> stZvalMap = zvarlBS.stream().collect(Collectors.toMap(StZvarlB::getRz, StZvarlB::getW));
-                List<BigDecimal> list = zvarlBS.stream().map(StZvarlB::getRz).collect(Collectors.toList());
+                List<BigDecimal> list = zvarlBS.stream().map(StZvarlB::getRz).sorted().collect(Collectors.toList());
                 vo.setNowCap(DataHandleUtil.calcData(rz,stZvalMap,list));
             }
         }
diff --git a/src/main/java/com/gunshi/project/xyt/util/DataHandleUtil.java b/src/main/java/com/gunshi/project/xyt/util/DataHandleUtil.java
index 9aec129..927efe7 100644
--- a/src/main/java/com/gunshi/project/xyt/util/DataHandleUtil.java
+++ b/src/main/java/com/gunshi/project/xyt/util/DataHandleUtil.java
@@ -31,7 +31,7 @@ public class DataHandleUtil {
         BigDecimal lowerW = new BigDecimal(0);
         BigDecimal upperW = new BigDecimal(0);
 
-        for(int i=0;i<list.size();i++){
+        for(int i=0;i<list.size()-1;i++){
             if (rz.compareTo(list.get(i)) >= 0 && rz.compareTo(list.get(i+1)) <= 0) {
                 lowerRz = list.get(i);
                 upperRz = list.get(i+1);