Vegetable Research & Innovation

Erosion & Sediment Control

Don't Muddy the Water

Erosion and Sediment Rate Calculator

Land Description

This is where you enter information about the land.

More Resources

More Resources

Factors and assumptions used in this app:



Barber, A. 2014. Erosion & Sediment Control Guidelines for Vegetable Production. Prepared for Horticulture New Zealand.  Link.

Barber, A., et al. 2019. Don’t Muddy the Water: Quantifying the effectiveness of sediment control on cultivated land. Prepared for MPI SFF Project 407925.

Basher, L., et al. 2016. Scientific basis for erosion and sediment control practices in New Zealand.  Link.

Franklin Sustainability Project. 2002. Soil and Drainage Management Guide. Prepared for Horticulture New Zealand.  Link.

Klik, A., et al. 2015. Spatial and temporal distribution of rainfall erosivity in New Zealand.  Soil Research v.53. DOI: 10.1071/SR14363.  Link.

Ouyang, Da., Bartholic, J. 1997. Predicting Sediment Delivery Ratio in Saginaw Bay Watershed. Institute of Water Research, Michigan State University. Link.

Xuyang, Z., et al. 2009. A Review of Vegetated Buffers and a Meta-analysis of Their Mitigation Efficacy in Reducing Nonpoint Source Pollution. J.Environ.Qual. 39:76–84 (2010). doi:10.2134/jeq2008.0496.  Link.


About Application

About this application:

This app calculates erosion and sediment loss rates, pre and post-mitigation for a given paddock based on slope, location, ground cover, row lengths and mitigation measures.

The application uses research results from the SFF project Don’t Muddy the Water as well as factors from the Revised Universal Soil Loss Equation (RUSLE) to model erosion rates.


It is assumed that all erosion and sediment control measures have been established and maintained correctly according to guidelines. Results will be misleading if the mitigation measures are not being implemented correctly.

©Agrilink NZ Ltd 2019


User Guide

How to use this application:

This app calculates rates of erosion from horticultural paddocks for both with (mitigated) and without (baseline) mitigation measures in place. The application has been designed to be easy to use and can be downloaded onto a mobile device by following the steps below:

Once opened, follow the link on the home page or the menu to the calculator and input the data on each page. The final page displays the results, and this page can also be navigated to directly through the menu. Results can also be downloaded as a text file for record keeping.

To obtain useful data on erosion rates, it is necessary to input data as accurately as possible and requires an accurate assessment of the size and effectiveness of existing mitigation measures.