diff --git a/app/Http/Controllers/CarteController.php b/app/Http/Controllers/CarteController.php
new file mode 100644
index 0000000..9dfbd7f
--- /dev/null
+++ b/app/Http/Controllers/CarteController.php
@@ -0,0 +1,56 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\Lieu;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+use Illuminate\View\View;
+
+class CarteController extends Controller
+{
+    public function index(): View
+    {
+        return view('carte.index');
+    }
+
+    public function data(Request $request): JsonResponse
+    {
+        $lieux = Lieu::whereNotNull('latitude')
+            ->whereNotNull('longitude')
+            ->whereHas('sources.releves')
+            ->with([
+                'sources' => function ($q) {
+                    $q->withCount('releves')
+                      ->select('id', 'nom', 'lieu_id', 'status', 'annee_debut', 'annee_fin')
+                      ->orderBy('nom');
+                },
+            ])
+            ->get()
+            ->map(function (Lieu $lieu) {
+                $relevesTotal = $lieu->sources->sum('releves_count');
+                return [
+                    'id'             => $lieu->id,
+                    'nom'            => $lieu->nom_long ?? $lieu->nom,
+                    'lat'            => (float) $lieu->latitude,
+                    'lng'            => (float) $lieu->longitude,
+                    'sources_count'  => $lieu->sources->count(),
+                    'releves_count'  => $relevesTotal,
+                    'sources'        => $lieu->sources->map(fn ($s) => [
+                        'id'            => $s->id,
+                        'nom'           => $s->nom,
+                        'releves_count' => $s->releves_count,
+                        'status'        => $s->status->label(),
+                        'status_value'  => $s->status->value,
+                        'annees'        => $s->annee_debut
+                            ? ($s->annee_debut === $s->annee_fin || ! $s->annee_fin
+                                ? (string) $s->annee_debut
+                                : "{$s->annee_debut}–{$s->annee_fin}")
+                            : null,
+                    ]),
+                ];
+            });
+
+        return response()->json($lieux);
+    }
+}
diff --git a/app/Models/Lieu.php b/app/Models/Lieu.php
index e8bca2a..4dd3ade 100644
--- a/app/Models/Lieu.php
+++ b/app/Models/Lieu.php
@@ -5,6 +5,7 @@ namespace App\Models;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasManyThrough;
 
 class Lieu extends Model
 {
@@ -32,6 +33,16 @@ class Lieu extends Model
         return $this->hasMany(Section::class);
     }
 
+    public function sources(): HasMany
+    {
+        return $this->hasMany(Source::class);
+    }
+
+    public function releves(): HasManyThrough
+    {
+        return $this->hasManyThrough(Releve::class, Source::class);
+    }
+
     public function calculerNomLong(): string
     {
         $noms = [$this->nom];
diff --git a/resources/views/carte/index.blade.php b/resources/views/carte/index.blade.php
new file mode 100644
index 0000000..db2dd6e
--- /dev/null
+++ b/resources/views/carte/index.blade.php
@@ -0,0 +1,170 @@
+<x-app-layout>
+    <x-slot name="header">
+        <div class="flex items-center justify-between">
+            <h2 class="text-xl font-semibold text-gray-800 dark:text-gray-200">Carte des relevés</h2>
+            <p class="text-sm text-gray-500 dark:text-gray-400" id="carte-stats"></p>
+        </div>
+    </x-slot>
+
+    @push('head')
+        {{-- Leaflet CSS --}}
+        <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css"
+              integrity="sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY=" crossorigin="">
+        <style>
+            #carte-map {
+                height: calc(100vh - 120px);
+                min-height: 400px;
+            }
+            /* Popup dark mode */
+            .dark .leaflet-popup-content-wrapper,
+            .dark .leaflet-popup-tip {
+                background-color: #1f2937;
+                color: #f3f4f6;
+            }
+            .dark .leaflet-popup-content-wrapper {
+                border: 1px solid #374151;
+            }
+            /* Contrôles dark mode */
+            .dark .leaflet-control-zoom a,
+            .dark .leaflet-control-attribution {
+                background-color: #1f2937;
+                color: #d1d5db;
+                border-color: #374151;
+            }
+            .dark .leaflet-control-zoom a:hover {
+                background-color: #374151;
+            }
+            /* Tuiles légèrement assombries en dark mode */
+            .dark .leaflet-tile {
+                filter: brightness(0.7) invert(1) contrast(3) hue-rotate(200deg) saturate(0.3) brightness(0.7);
+            }
+        </style>
+    @endpush
+
+    {{-- La carte occupe toute la hauteur disponible --}}
+    <div id="carte-map" class="w-full"></div>
+
+    @push('head')
+        {{-- Leaflet JS (chargé en fin de head pour ne pas bloquer le rendu) --}}
+        <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"
+                integrity="sha256-20nQCchB9co0qIjJZRGuk2/Z9VM+kNiyxNV/XN2GqM8=" crossorigin=""
+                defer></script>
+
+        <script>
+        document.addEventListener('DOMContentLoaded', function () {
+            // ── Initialisation de la carte ──────────────────────────────────────
+            const map = L.map('carte-map', {
+                center: [46.5, 2.2],   // centre de la France
+                zoom: 6,
+                zoomControl: true,
+            });
+
+            L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
+                maxZoom: 19,
+                attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a>',
+            }).addTo(map);
+
+            // ── Icône personnalisée ────────────────────────────────────────────
+            function makeIcon(count) {
+                const size = count > 10 ? 40 : count > 3 ? 34 : 28;
+                const color = count > 10 ? '#4f46e5' : count > 3 ? '#6366f1' : '#818cf8';
+                return L.divIcon({
+                    className: '',
+                    html: `<div style="
+                        width:${size}px; height:${size}px;
+                        background:${color};
+                        border:3px solid white;
+                        border-radius:50%;
+                        box-shadow:0 2px 6px rgba(0,0,0,.35);
+                        display:flex; align-items:center; justify-content:center;
+                        font-size:${size > 30 ? 13 : 11}px;
+                        font-weight:700; color:white; font-family:sans-serif;
+                    ">${count}</div>`,
+                    iconSize: [size, size],
+                    iconAnchor: [size / 2, size / 2],
+                    popupAnchor: [0, -(size / 2 + 4)],
+                });
+            }
+
+            // ── Statut → badge couleur ─────────────────────────────────────────
+            const statusColors = {
+                'a_faire':   'background:#f3f4f6;color:#374151',
+                'en_cours':  'background:#dbeafe;color:#1d4ed8',
+                'a_valider': 'background:#fef9c3;color:#92400e',
+                'termine':   'background:#d1fae5;color:#065f46',
+            };
+
+            // ── Chargement des données ─────────────────────────────────────────
+            fetch('{{ route('carte.data') }}')
+                .then(r => r.json())
+                .then(lieux => {
+                    if (lieux.length === 0) {
+                        document.getElementById('carte-stats').textContent =
+                            'Aucun lieu géolocalisé avec des relevés.';
+                        return;
+                    }
+
+                    const totalReleves = lieux.reduce((s, l) => s + l.releves_count, 0);
+                    document.getElementById('carte-stats').textContent =
+                        `${lieux.length} lieu${lieux.length > 1 ? 'x' : ''} · ${totalReleves.toLocaleString('fr-FR')} relevé${totalReleves > 1 ? 's' : ''}`;
+
+                    const bounds = [];
+
+                    lieux.forEach(lieu => {
+                        bounds.push([lieu.lat, lieu.lng]);
+
+                        // ── Contenu du popup ───────────────────────────────────
+                        const sourcesHtml = lieu.sources.map(s => {
+                            const style = statusColors[s.status_value] || statusColors['a_faire'];
+                            const annees = s.annees ? ` <span style="color:#6b7280;font-size:11px">(${s.annees})</span>` : '';
+                            return `<div style="display:flex;align-items:center;justify-content:space-between;gap:8px;padding:3px 0;border-bottom:1px solid #f3f4f6">
+                                <div style="min-width:0">
+                                    <a href="/sources/${s.id}" style="color:#4f46e5;font-size:13px;font-weight:500;text-decoration:none"
+                                       onmouseover="this.style.textDecoration='underline'"
+                                       onmouseout="this.style.textDecoration='none'">${s.nom}</a>${annees}
+                                </div>
+                                <div style="display:flex;align-items:center;gap:6px;flex-shrink:0">
+                                    <span style="font-size:11px;${style};padding:1px 6px;border-radius:9999px;white-space:nowrap">${s.status}</span>
+                                    <span style="font-size:12px;color:#6b7280;white-space:nowrap">${s.releves_count.toLocaleString('fr-FR')} rel.</span>
+                                </div>
+                            </div>`;
+                        }).join('');
+
+                        const popup = `
+                            <div style="min-width:260px;max-width:320px;font-family:sans-serif">
+                                <div style="font-size:15px;font-weight:700;margin-bottom:6px;padding-bottom:6px;border-bottom:2px solid #e5e7eb">
+                                    📍 ${lieu.nom}
+                                </div>
+                                <div style="font-size:12px;color:#6b7280;margin-bottom:8px">
+                                    ${lieu.sources_count} source${lieu.sources_count > 1 ? 's' : ''} ·
+                                    <strong>${lieu.releves_count.toLocaleString('fr-FR')}</strong> relevé${lieu.releves_count > 1 ? 's' : ''}
+                                </div>
+                                <div>${sourcesHtml}</div>
+                                <div style="margin-top:8px;text-align:right">
+                                    <a href="/recherche?lieu_id=${lieu.id}"
+                                       style="font-size:12px;color:#4f46e5;text-decoration:none"
+                                       onmouseover="this.style.textDecoration='underline'"
+                                       onmouseout="this.style.textDecoration='none'">
+                                        Rechercher dans ces relevés →
+                                    </a>
+                                </div>
+                            </div>`;
+
+                        L.marker([lieu.lat, lieu.lng], { icon: makeIcon(lieu.sources_count) })
+                            .addTo(map)
+                            .bindPopup(popup, { maxWidth: 340 });
+                    });
+
+                    // Ajuster la vue sur tous les marqueurs
+                    if (bounds.length > 0) {
+                        map.fitBounds(bounds, { padding: [40, 40], maxZoom: 12 });
+                    }
+                })
+                .catch(() => {
+                    document.getElementById('carte-stats').textContent = 'Erreur lors du chargement des données.';
+                });
+        });
+        </script>
+    @endpush
+
+</x-app-layout>
diff --git a/resources/views/layouts/app.blade.php b/resources/views/layouts/app.blade.php
index b323ff8..635dabf 100644
--- a/resources/views/layouts/app.blade.php
+++ b/resources/views/layouts/app.blade.php
@@ -31,6 +31,7 @@
 
         <!-- Scripts -->
         @vite(['resources/css/app.css', 'resources/js/app.js'])
+        @stack('head')
     </head>
     <body class="font-sans antialiased bg-gray-100 dark:bg-gray-900 text-gray-900 dark:text-gray-100">
         <div class="min-h-screen">
diff --git a/resources/views/layouts/navigation.blade.php b/resources/views/layouts/navigation.blade.php
index 41db80f..7a5fc46 100644
--- a/resources/views/layouts/navigation.blade.php
+++ b/resources/views/layouts/navigation.blade.php
@@ -33,6 +33,10 @@
                         Recherche
                     </x-nav-link>
 
+                    <x-nav-link :href="route('carte')" :active="request()->routeIs('carte*')">
+                        Carte
+                    </x-nav-link>
+
                     @if(auth()->user()->isSectionManager())
                         <div class="hidden sm:flex sm:items-center">
                             <x-dropdown align="left" width="w-56">
@@ -198,6 +202,9 @@
             <x-responsive-nav-link :href="route('recherche')" :active="request()->routeIs('recherche')">
                 Recherche
             </x-responsive-nav-link>
+            <x-responsive-nav-link :href="route('carte')" :active="request()->routeIs('carte*')">
+                Carte
+            </x-responsive-nav-link>
             @if(auth()->user()->isSectionManager())
                 @if(auth()->user()->isAdmin())
                     <x-responsive-nav-link :href="route('admin.dashboard')" :active="request()->routeIs('admin.dashboard')">
diff --git a/routes/web.php b/routes/web.php
index 834baaa..8a3bb03 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -1,5 +1,6 @@
 <?php
 
+use App\Http\Controllers\CarteController;
 use App\Http\Controllers\DashboardController;
 use App\Http\Controllers\ExportController;
 use App\Http\Controllers\LieuController;
@@ -57,6 +58,8 @@ Route::middleware('auth')->group(function () {
         ->parameters(['releves' => 'releve']);
 
     Route::get('recherche', [RechercheController::class, 'index'])->name('recherche');
+    Route::get('carte',          [CarteController::class, 'index'])->name('carte');
+    Route::get('carte/data',     [CarteController::class, 'data'])->name('carte.data');
     Route::get('export/source/{source}', [ExportController::class, 'source'])->name('export.source');
     Route::get('export/recherche', [ExportController::class, 'recherche'])->name('export.recherche');