Analysis of Streamflow Trend in the Susquehanna River Basin, USA - Hydrologic Time Series Analysis: Theory and Practice - page 192

Fig. 9.9. The watersheds with abrupt increased annual median
streamflows around 1970.
For annual maximum streamflows, none of the 11 watersheds of the study
area show an abrupt increase around 1970 as seen in the annual minimum and
median streamflows in Sinnemahoning Creek. For example, Fig. 9.10 shows
the annual maximum streamflows at Sinnemahoning Creek and Fig. 9.11
shows the results of the multiple tests. The majority of the multiple monotonic
trend tests are insignificant with limited scattered significant trends over
relatively short-term periods.