an accreditation framework has been developed for use of the river styles framework to ensure quality control. there are two levels of accreditation: 'provisional' and 'accredited'. 'provisional' practitioners have undertaken a river styles short course and have passed the associated assessment tasks. 'provisional' practitioners may undertake assessments of river styles under the supervision of a fully accredited practitioner. full accreditation is gained following successful completion of a river styles short course and completion of a satisfactory river styles report. 'accredited' practitioners may undertake river styles assessments unsupervised and may also supervise 'provisional' practitioners.