Index: Ringtoets/Integration/src/Ringtoets.Integration.Plugin/FileImporters/HydraulicBoundaryDatabaseImporter.cs
===================================================================
diff -u -rfc22f4b149d07797f0526f04ca58595bb9446786 -ra77cd7f471b813c6a7218b42844d017fc10fb4ec
--- Ringtoets/Integration/src/Ringtoets.Integration.Plugin/FileImporters/HydraulicBoundaryDatabaseImporter.cs	(.../HydraulicBoundaryDatabaseImporter.cs)	(revision fc22f4b149d07797f0526f04ca58595bb9446786)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Plugin/FileImporters/HydraulicBoundaryDatabaseImporter.cs	(.../HydraulicBoundaryDatabaseImporter.cs)	(revision a77cd7f471b813c6a7218b42844d017fc10fb4ec)
@@ -39,8 +39,8 @@
     /// </summary>
     public class HydraulicBoundaryDatabaseImporter : IDisposable
     {
-        private string hydraulicBoundaryDatabaseFilePath;
         private readonly ILog log = LogManager.GetLogger(typeof(HydraulicBoundaryDatabaseImporter));
+        private string hydraulicBoundaryDatabaseFilePath;
 
         private HydraulicBoundarySqLiteDatabaseReader hydraulicBoundaryDatabaseReader;
         private HydraulicLocationConfigurationSqLiteDatabaseReader hydraulicLocationConfigurationDatabaseReader;
@@ -142,13 +142,16 @@
                     Version = hydraulicBoundaryDatabaseReader.GetVersion()
                 };
 
+                var locationidsDictionary = hydraulicLocationConfigurationDatabaseReader.GetLocationsIdByRegionId(regionId);
                 hydraulicBoundaryDatabaseReader.PrepareReadLocation();
                 while (hydraulicBoundaryDatabaseReader.HasNext)
                 {
                     try
                     {
                         HrdLocation hrdLocation = hydraulicBoundaryDatabaseReader.ReadLocation();
-                        var locationId = hydraulicLocationConfigurationDatabaseReader.GetLocationId(regionId, hrdLocation.HrdLocationId);
+
+                        long locationId;
+                        locationidsDictionary.TryGetValue(hrdLocation.HrdLocationId, out locationId);
                         var hydraulicBoundaryLocation = new HydraulicBoundaryLocation(locationId, hrdLocation.Name, hrdLocation.LocationX, hrdLocation.LocationY);
 
                         hydraulicBoundaryDatabase.Locations.Add(hydraulicBoundaryLocation);