---
title: "Negative Depth Reporting | Technical Reference"
slug: "negative-depth-reporting"
description: "Read about negative depth reporting in the 2D solver. "
tags: ["2D modelling"]
updated: 2022-07-29T10:26:03Z
published: 2022-07-29T10:26:03Z
canonical: "help.floodmodeller.com/negative-depth-reporting"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.floodmodeller.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Negative Depth Reporting

2D solver reports the first instance of a cell with a negative depth  (indicating poor model stability.   The time of occurrence and the  cell's location are reported once to allow the user to diagnose the specific  area if the model suffers from significant mass error.