diff --git a/src/solver/hydro/include/antares/solver/hydro/management/HydroErrorsCollector.h b/src/solver/hydro/include/antares/solver/hydro/management/HydroErrorsCollector.h
index af1d4177cc..946acd8561 100644
--- a/src/solver/hydro/include/antares/solver/hydro/management/HydroErrorsCollector.h
+++ b/src/solver/hydro/include/antares/solver/hydro/management/HydroErrorsCollector.h
@@ -32,11 +32,22 @@ class HydroErrorsCollector
     void Collect(const std::string& area_name, const std::string& message);
     void Collect(const std::string& message);
     void CheckForFatalErrors() const;
+    template<class T>
+    std::ostream& operator<<(const T& obj);
 
 private:
+    // for log
+    constexpr unsigned int TRHESHOLD_NUMBER_OF_ERRORS_FOR_ONE_AREA = 10;
     std::map<std::string, unsigned int> area_errors_counter_;
     bool errors_limit_reached_ = false;
     bool stop_ = false;
     // std::vector<std::string> fatal_errors_;
 };
+
+template<class T>
+HydroErrorsCollector& HydroErrorsCollector::operator<<(const T& obj)
+{
+    logs.error() << obj;
+    return *this;
+}
 } // namespace Antares
diff --git a/src/solver/hydro/management/HydroErrorsCollector.cpp b/src/solver/hydro/management/HydroErrorsCollector.cpp
index ec8152e836..93374314d4 100644
--- a/src/solver/hydro/management/HydroErrorsCollector.cpp
+++ b/src/solver/hydro/management/HydroErrorsCollector.cpp
@@ -9,13 +9,14 @@ namespace Antares
 void HydroErrorsCollector::Collect(const std::string& area_name, const std::string& message)
 {
     logs.error() << "In Area " << area_name << " " << message;
-    area_errors_counter_[area_name]++;
-    errors_limit_reached_ = area_errors_counter_[area_name] > 10;
+    auto error_count = area_errors_counter_[area_name]++;
+    errors_limit_reached_ = error_count > TRHESHOLD_NUMBER_OF_ERRORS_FOR_ONE_AREA;
     stop_ = true;
 
     if (errors_limit_reached_)
     {
-        throw FatalError("Hydro validation has failed !");
+        logs.error() << "Hydro validation has failed !";
+        logs.error() << error_count << " errors found in Area " << area_name;
     }
 }
 
@@ -27,7 +28,7 @@ void HydroErrorsCollector::Collect(const std::string& message)
 
 void HydroErrorsCollector::CheckForFatalErrors() const
 {
-    if (stop_ || errors_limit_reached_)
+    if (stop_)
     {
         throw FatalError("Hydro validation has failed !");
     }