We are now monitoring ten points along the river Par from Higher Menadue to Ponts Mill, surveying the rivers and streams at: the Carbis stream, the Upper Par, outskirts of Luxulyan village, Treverbyn stream, Gatty's Bridge, Cam Bridges, Luxulyan viaduct, near Rock Mill Quarry, near Lady Rashleigh's mine and Ponts Mill.  

Roger's drawing shows all the different tributaries that feed into the Par, an understanding of which helps to interpret results: