The data on this site is based on the paper records of Joint Investigation Visits (JIVs) carried out when an oil spill takes place. It is kept up to date by NOSDRA.
NOSDRA was set up in 2006. NOSDRA is working to update the information displayed on the Oil Spill Monitor, but needs the support of others to do so. Data submitted by oil companies and others can also be incomplete, for example missing geolocation data.
NOSDRA is working with the industry to improve compliance and reporting obligations.
There are concerns about regulatory compliance relating to the reporting and clean-up of oil spills by those responsible.
A larger number of spills attributed to a particular company could mean it has a stronger commitment to regulatory compliance, although as with any data care should be taken when interpreting it. Some companies with large operations in the Niger Delta may have no data available.