| Acheron | Acheron River flow data | 
| ann.cv | Calculate interannual coefficient of variation | 
| baseflows | Measures of central tendency and baseflow via the Lynne-Hollick (LH) baseflow filter | 
| Colwells | Colwells indices | 
| Cooper | Cooper Creek flow data | 
| CTF | Cease-to-flow (CTF) spell statistics | 
| daily.cv | Calculate daily cofficient of variation | 
| day.dist | Calculate average timing of events (doy) | 
| flood.length.max | Calculates the maximum flood length in a time series. | 
| four.digit.year | Correct conversion of years to four digit format | 
| get.days | Function to determine the number of days 365 or 366 in a given year. | 
| high.spell.lengths | Calculate the length of all high flow spells | 
| high.spells | Calculates high flow spell statistics | 
| hydro.year | Determine hydrologic year for the purposes of deriving spell characteristics | 
| hydrostats | calculate hydrologic statistics | 
| low.spell.lengths | Calculate the length of all low flow spells | 
| low.spells | Calculate low flow spell statistics | 
| monthly.cv | Calculate monthly coefficient of variation | 
| partial.series | Partial and annual exceedence series. | 
| recode | recode | 
| seasonality | Calculate seasonality of discharge | 
| ts.format | Format dates as POSIXct |