This package implements The Nature Conservancy's Indicators of Hydrologic Alteration software in R.

bullrun | Bull Run river flow data |

change.rate | Calculate change rate for a vector |

flow.duration | Plot a flow duration curve |

group1 | Magnitude of monthly water conditions |

group2 | Calculates the group2 IHA statistics |

group2Funs | Calculates group2 statistics from a matrix of rolling means |

group3 | Calculate the group 3 IHA parameters. |

group4 | Calculate the group 4 IHA parameters. |

group5 | Calculate the group 5 IHA parameters. |

IHA-package | Indicators of Hydrologic Alteration |

internal | Internal functions in IHA |

plotDischarge | Plot discharge |

plot.group1 | Plot group1 statistics |

plotGroup1 | Plot group1 statistics |

read.flow | Reads a rdb formatted data file from the USGS web site or... |

runmean.iha | Calculate rolling means for group2 statistics |

water.month | Extract the month of the water year from a date or time... |

water.year | Return a string giving the water year for a date |

which.min.zoo | Calculate the date of a extreme value for a zoo series |

yday2 | Calculate the day of the year as TNC does in their IHA... |

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