geonode:rainfall Isohyetal map of Trinidad showing 75 years of mean annual rainfall for the record period 1911-1985 (in mm). The data was collected, isohyetals constructed and subsequent map produced by the Water Resources Agency of the Water and Sewerage Authority (WASA) of Trinidad and Tobago. isohyets rainfall isohyetal map annual rainfall features EPSG:2067 CRS:84 -61.91669099361955 -60.94516506967864 10.053693462103968 10.851738375488756 other other other other text/xml other other