diff --git a/source/renderer/PostprocManager.h b/source/renderer/PostprocManager.h
index cb2d3c2b2b..cc8efd8702 100644
--- a/source/renderer/PostprocManager.h
+++ b/source/renderer/PostprocManager.h
@@ -88,6 +88,8 @@ public:
 	void ResolveMultisampleFramebuffer(
 		Renderer::Backend::IDeviceCommandContext* deviceCommandContext);
 
+	float GetScale() const { return m_Scale; }
+
 private:
 	void CreateMultisampleBuffer();
 	void DestroyMultisampleBuffer();
diff --git a/source/renderer/TerrainRenderer.cpp b/source/renderer/TerrainRenderer.cpp
index 5d918128f2..f2715c59b8 100644
--- a/source/renderer/TerrainRenderer.cpp
+++ b/source/renderer/TerrainRenderer.cpp
@@ -1,4 +1,4 @@
-/* Copyright (C) 2023 Wildfire Games.
+/* Copyright (C) 2024 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -43,6 +43,7 @@
 #include "renderer/backend/PipelineState.h"
 #include "renderer/DecalRData.h"
 #include "renderer/PatchRData.h"
+#include "renderer/PostprocManager.h"
 #include "renderer/Renderer.h"
 #include "renderer/RenderingOptions.h"
 #include "renderer/SceneRenderer.h"
@@ -606,10 +607,11 @@ bool TerrainRenderer::RenderFancyWater(
 		lightEnv.m_FogFactor, lightEnv.m_FogMax);
 	deviceCommandContext->SetUniform(
 		fancyWaterShader->GetBindingSlot(str_time), static_cast<float>(time));
+	const float scale{g_Renderer.GetPostprocManager().IsEnabled()
+		? g_Renderer.GetPostprocManager().GetScale() : 1.0f};
 	deviceCommandContext->SetUniform(
 		fancyWaterShader->GetBindingSlot(str_screenSize),
-		static_cast<float>(g_Renderer.GetWidth()),
-		static_cast<float>(g_Renderer.GetHeight()));
+		g_Renderer.GetWidth() * scale, g_Renderer.GetHeight() * scale);
 
 	if (waterManager.m_WaterType == L"clap")
 	{
diff --git a/source/renderer/WaterManager.cpp b/source/renderer/WaterManager.cpp
index d770de131a..28d0363b79 100644
--- a/source/renderer/WaterManager.cpp
+++ b/source/renderer/WaterManager.cpp
@@ -30,6 +30,7 @@
 #include "ps/Game.h"
 #include "ps/World.h"
 #include "renderer/backend/IDevice.h"
+#include "renderer/PostprocManager.h"
 #include "renderer/Renderer.h"
 #include "renderer/RenderingOptions.h"
 #include "renderer/SceneRenderer.h"
@@ -320,8 +321,10 @@ void WaterManager::RecreateOrLoadTexturesIfNeeded()
 		}
 	}
 
-	const uint32_t newWidth = static_cast<uint32_t>(g_Renderer.GetWidth());
-	const uint32_t newHeight = static_cast<uint32_t>(g_Renderer.GetHeight());
+	const float scale{g_Renderer.GetPostprocManager().IsEnabled()
+		? g_Renderer.GetPostprocManager().GetScale() : 1.0f};
+	const uint32_t newWidth{static_cast<uint32_t>(g_Renderer.GetWidth() * scale)};
+	const uint32_t newHeight{static_cast<uint32_t>(g_Renderer.GetHeight() * scale)};
 	if (m_FancyTexture && (m_FancyTexture->GetWidth() != newWidth || m_FancyTexture->GetHeight() != newHeight))
 	{
 		m_FancyEffectsFramebuffer.reset();
@@ -339,14 +342,14 @@ void WaterManager::RecreateOrLoadTexturesIfNeeded()
 		m_FancyTexture = m_Device->CreateTexture2D("WaterFancyTexture",
 			Renderer::Backend::ITexture::Usage::SAMPLED |
 				Renderer::Backend::ITexture::Usage::COLOR_ATTACHMENT,
-			Renderer::Backend::Format::R8G8B8A8_UNORM, g_Renderer.GetWidth(), g_Renderer.GetHeight(),
+			Renderer::Backend::Format::R8G8B8A8_UNORM, newWidth, newHeight,
 			Renderer::Backend::Sampler::MakeDefaultSampler(
 				Renderer::Backend::Sampler::Filter::LINEAR,
 				Renderer::Backend::Sampler::AddressMode::REPEAT));
 
 		m_FancyTextureDepth = m_Device->CreateTexture2D("WaterFancyDepthTexture",
 			Renderer::Backend::ITexture::Usage::DEPTH_STENCIL_ATTACHMENT,
-			depthFormat, g_Renderer.GetWidth(), g_Renderer.GetHeight(),
+			depthFormat, newWidth, newHeight,
 			Renderer::Backend::Sampler::MakeDefaultSampler(
 				Renderer::Backend::Sampler::Filter::LINEAR,
 				Renderer::Backend::Sampler::AddressMode::REPEAT));