Streamflows are measured at a station over a long period of time.<br /></p><p><br /></p><p>We use ratings curves to convert water level to discharge<br /></p><p><br /></p><p>These observations (ratings) change over time).<br /></p><p><br /></p><p>--------------------------------------------------------------<br /></p><p>How does this fit?<br /></p><p><br /></p><p>The WIGOS model doesn't cover that. But WaterML2 part 2 Ratings Gaugings and sections do.<br /></p><p><br /></p><p>-----------------------------------------------------<br /></p><p><br /></p><p><br /></p><p>Sensor can exist but with no observations  e..g it may not have flow data until a rating curve has been created.<br /></p><p><br /></p><p><br /></p>