Streamflow Statistic Trends at USGS Streamgages within the Chesapeake Bay Watershed (1940-2018)
Description
This Child Item contains (1) a table of trends in eight annual streamflow statistics for the time periods 1940-1969, 1970-1999, and 2000-2018, and
(2) a .zip file of plots of the eight statistical trends for the three time periods.
The annual streamflow statistics and their trends were computed by Climate Year (CY) for 1-,7- and 30-day minima and by Water Year (WY) for 1-,7- and 30-day maxima, median and mean.
Streamgages from the original dataset (n = 409) were excluded from one or more time periods of analysis because of extensive data gaps that would interrupt trend lines;
therefore, streamgages were indexed into the earliest possible time period relative to their installation date
(for example, a streamgage with an operating start year of 1958 would be included in the analysis for the time periods 1970-1999 and 2000-2018), which resulted in different sample sizes for each period:
1940-1969 (n = 90), 1970-1999 (n = 167), and 2000-2018 (n = 243).
Similarly, multiple streamgages were wholly excluded because of frequent discontinuities in the daily mean streamflow used to derive the annual mean streamflow through all three time periods.
Resources
| Name |
Format |
Description |
Link |
|
55 |
The metadata original format |
https://data.usgs.gov/datacatalog/metadata/USGS.6092890cd34e791692e3e913.xml |
|
55 |
Landing page for access to the data |
https://doi.org/10.5066/P99OOTED |
Tags
- new-york
- delaware
- chesapeake-bay-watershed
- virginia
- united-states
- flow
- west-virginia
- pennsylvania
- usgs-6092890cd34e791692e3e913
- stream-flow-trends
- maryland
- egret
- washington-dc
- time-series