diff --git a/docs/changelog.rst b/docs/changelog.rst
index a9a5202d..8699fea0 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -13,6 +13,7 @@ CHANGELOG
 * Add contribution status
 * Send mail to managers when contribution is created
 * Send mail to contributor when contribution is created
+* Add linked objects on contributions
 
 1.1.0        (2023-13-06)
 -------------------------
diff --git a/georiviere/contribution/forms.py b/georiviere/contribution/forms.py
index 847541ca..d2e252ad 100644
--- a/georiviere/contribution/forms.py
+++ b/georiviere/contribution/forms.py
@@ -1,14 +1,29 @@
-from crispy_forms.layout import Div
+from crispy_forms.layout import Div, Field
+from dal import autocomplete
+from django.utils.translation import gettext_lazy as _
 
 from geotrek.common.forms import CommonForm
 
 from georiviere.contribution.models import Contribution
+from georiviere.knowledge.models import FollowUp, Knowledge
+from georiviere.maintenance.models import Intervention
 
 
-class ContributionForm(CommonForm):
+class ContributionForm(autocomplete.FutureModelForm, CommonForm):
     can_delete = False
     geomfields = ['geom']
 
+    linked_object = autocomplete.Select2GenericForeignKeyModelField(
+        model_choice=[
+            (Knowledge, 'name'),
+            (Intervention, 'name'),
+            (FollowUp, 'name')
+        ],
+        label=_('Linked object'),
+        required=False,
+        initial=None,
+    )
+
     fieldslayout = [
         Div(
             "description",
@@ -19,12 +34,13 @@ class ContributionForm(CommonForm):
             "email_author",
             "assigned_user",
             "status_contribution",
+            Field('linked_object', css_class="chosen-select"),
         )
     ]
 
     class Meta(CommonForm):
         fields = ["description", "severity", "published", "portal", "email_author", "geom", "assigned_user",
-                  "status_contribution", "validated"]
+                  "status_contribution", "validated", "linked_object"]
         model = Contribution
 
     def __init__(self, *args, **kwargs):
@@ -35,3 +51,9 @@ def __init__(self, *args, **kwargs):
 
     def clean_portal(self):
         return self.instance.portal
+
+    def clean_linked_object(self):
+        linked_object = self.cleaned_data['linked_object']
+        if linked_object == "":
+            return None
+        return linked_object
diff --git a/georiviere/contribution/migrations/0007_auto_20230725_1541.py b/georiviere/contribution/migrations/0007_auto_20230725_1541.py
new file mode 100644
index 00000000..5cb2eb1b
--- /dev/null
+++ b/georiviere/contribution/migrations/0007_auto_20230725_1541.py
@@ -0,0 +1,25 @@
+# Generated by Django 3.1.14 on 2023-07-25 15:41
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contenttypes', '0002_remove_content_type_name'),
+        ('contribution', '0006_contribution_publication_date'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='contribution',
+            name='linked_object_id',
+            field=models.PositiveIntegerField(blank=True, null=True),
+        ),
+        migrations.AddField(
+            model_name='contribution',
+            name='linked_object_type',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to='contenttypes.contenttype'),
+        ),
+    ]
diff --git a/georiviere/contribution/models.py b/georiviere/contribution/models.py
index b370274a..4ad3ff6e 100644
--- a/georiviere/contribution/models.py
+++ b/georiviere/contribution/models.py
@@ -2,6 +2,8 @@
 
 from django.conf import settings
 from django.contrib.auth.models import User
+from django.contrib.contenttypes.fields import GenericForeignKey
+from django.contrib.contenttypes.models import ContentType
 from django.contrib.gis.db import models
 from django.core.mail import mail_managers
 from django.template.loader import render_to_string
@@ -99,6 +101,9 @@ class Contribution(BasePublishableMixin, TimeStampedModelMixin, WatershedPropert
     )
     validated = models.BooleanField(verbose_name=_("Validated"), default=False,
                                     help_text=_("Validate the contribution"))
+    linked_object_type = models.ForeignKey(ContentType, null=True, on_delete=models.CASCADE)
+    linked_object_id = models.PositiveIntegerField(blank=True, null=True)
+    linked_object = GenericForeignKey('linked_object_type', 'linked_object_id')
 
     class Meta:
         verbose_name = _("Contribution")
@@ -108,6 +113,16 @@ class Meta:
     def category_verbose_name(cls):
         return _("Name")
 
+    @classproperty
+    def linked_object_verbose_name(cls):
+        return _("Linked object")
+
+    @property
+    def linked_object_model_name(self):
+        if self.linked_object:
+            return self.linked_object._meta.verbose_name
+        return None
+
     def __str__(self):
         if hasattr(self, 'potential_damage'):
             return f'{self.email_author} {ContributionPotentialDamage._meta.verbose_name.title()} ' \
diff --git a/georiviere/contribution/templates/contribution/contribution_detail_attributes.html b/georiviere/contribution/templates/contribution/contribution_detail_attributes.html
index 90efab1a..9a186fd7 100644
--- a/georiviere/contribution/templates/contribution/contribution_detail_attributes.html
+++ b/georiviere/contribution/templates/contribution/contribution_detail_attributes.html
@@ -35,6 +35,10 @@
             <th>{{ object|verbose:"status_contribution" }}</th>
             <td>{{ object.status_contribution|default:"" }}</td>
         </tr>
+        <tr>
+            <th>{{ object|verbose:"linked_object" }}</th>
+            <td>{% if object.linked_object_model_name %}{{ object.linked_object_model_name }} : {% endif %}{{ object.linked_object|default:"" }}</td>
+        </tr>
         {% if object.potential_damage %}
             <tr>
                 <th>{{ object.potential_damage|verbose:"type" }}</th>
diff --git a/georiviere/contribution/templates/contribution/contribution_list.html b/georiviere/contribution/templates/contribution/contribution_list.html
index 3d0de1f5..0e10f82d 100644
--- a/georiviere/contribution/templates/contribution/contribution_list.html
+++ b/georiviere/contribution/templates/contribution/contribution_list.html
@@ -5,7 +5,6 @@
 
 {% block extrabody %}
     {{ block.super }}
-    <script type="text/javascript" src="https://code.jquery.com/ui/1.11.3/jquery-ui.min.js"></script>
     <script type="text/javascript">
         $("select#id_category").on("change", function(event, status) {
             var selectedCategories = [];
diff --git a/georiviere/contribution/tests/test_views.py b/georiviere/contribution/tests/test_views.py
index 91bf4560..78a456c6 100644
--- a/georiviere/contribution/tests/test_views.py
+++ b/georiviere/contribution/tests/test_views.py
@@ -1,6 +1,10 @@
+from django.contrib.contenttypes.models import ContentType
+
 from georiviere.tests import CommonRiverTest
 from . import factories
 from georiviere.contribution import models as contribution_models
+from georiviere.knowledge.models import Knowledge
+from georiviere.knowledge.tests.factories import KnowledgeFactory
 from georiviere.portal.tests.factories import PortalFactory
 
 
@@ -26,18 +30,23 @@ def get_expected_json_attrs(self):
             'status_contribution': self.obj.status_contribution,
             'validated': False,
             'publication_date': self.obj.publication_date,
+            'linked_object_type': None,
+            'linked_object_id': None,
         }
 
     def get_good_data(self):
         portal = PortalFactory.create()
         severity = factories.SeverityTypeTypeFactory()
         temp_data = self.modelfactory.build(portal=portal)
+        knowledge = KnowledgeFactory.create()
         return {
             'email_author': temp_data.email_author,
             'portal': portal.pk,
             'geom': temp_data.geom.ewkt,
             'severity': severity.pk,
-            'description': 'New_description'
+            'description': 'New_description',
+            'linked_object_id': knowledge.pk,
+            'linked_object_type': ContentType.objects.get_for_model(Knowledge)
         }
 
     def test_distance_to_source_is_available(self):
@@ -60,10 +69,27 @@ def test_crud_status(self):
         response = self.client.get(obj.get_detail_url())
         self.assertEqual(response.status_code, 200)
 
+        obj.linked_object = KnowledgeFactory.create()
+        obj.save()
+
+        response = self.client.get(obj.get_detail_url())
+        self.assertEqual(response.status_code, 200)
+
         response = self.client.get(obj.get_update_url())
         self.assertEqual(response.status_code, 200)
         self._post_update_form(obj)
 
+        response = self.client.get(obj.get_update_url())
+        self.assertEqual(response.status_code, 200)
+        good_data_without_linked_object = self.get_good_data()
+        good_data_without_linked_object['linked_object'] = ""
+        response = self.client.post(obj.get_update_url(), good_data_without_linked_object)
+        if response.status_code != 302:
+            form = self.get_form(response)
+            self.assertEqual(form.errors, [])  # this will show form errors
+
+        self.assertEqual(response.status_code, 302)  # success, redirects to detail view
+
         url = obj.get_detail_url()
         obj.delete()
         response = self.client.get(url)
diff --git a/georiviere/contribution/views.py b/georiviere/contribution/views.py
index 88ce2af2..74730776 100644
--- a/georiviere/contribution/views.py
+++ b/georiviere/contribution/views.py
@@ -16,6 +16,8 @@ class ContributionList(MapEntityList):
 class ContributionLayer(MapEntityLayer):
     queryset = Contribution.objects.all()
     model = Contribution
+    filterform = ContributionFilterSet
+    columns = ['category', ]
 
 
 class ContributionJsonList(MapEntityJsonList, ContributionList):
diff --git a/georiviere/knowledge/models.py b/georiviere/knowledge/models.py
index 91173b39..cf24f2c5 100644
--- a/georiviere/knowledge/models.py
+++ b/georiviere/knowledge/models.py
@@ -225,6 +225,12 @@ class Knowledge(WatershedPropertiesMixin, TimeStampedModelMixin, ZoningPropertie
         object_id_field='target_id',
     )
 
+    contributions = GenericRelation(
+        'contribution.Contribution',
+        content_type_field='linked_object_type',
+        object_id_field='linked_object_id',
+    )
+
     class Meta:
         verbose_name = _("Knowledge")
         verbose_name_plural = _("Knowledges")
@@ -450,6 +456,11 @@ class FollowUp(TimeStampedModelMixin, WatershedPropertiesMixin, ZoningProperties
     length = models.FloatField(default=0.0, blank=True, null=True, verbose_name=_("Length"))
     width = models.FloatField(default=0.0, blank=True, null=True, verbose_name=_("Width"))
     height = models.FloatField(default=0.0, blank=True, null=True, verbose_name=_("Height"))
+    contributions = GenericRelation(
+        'contribution.Contribution',
+        content_type_field='linked_object_type',
+        object_id_field='linked_object_id',
+    )
 
     # generic relations
     administrative_operations = GenericRelation(AdministrativeOperation)
diff --git a/georiviere/maintenance/models.py b/georiviere/maintenance/models.py
index 0f7e4554..5bfd4539 100644
--- a/georiviere/maintenance/models.py
+++ b/georiviere/maintenance/models.py
@@ -61,6 +61,11 @@ class Intervention(TimeStampedModelMixin, WatershedPropertiesMixin, ZoningProper
 
     # generic relations
     administrative_operations = GenericRelation(AdministrativeOperation)
+    contributions = GenericRelation(
+        'contribution.Contribution',
+        content_type_field='linked_object_type',
+        object_id_field='linked_object_id',
+    )
 
     class Meta:
         verbose_name = _("Intervention")