FEH1000                package:nsRFA                R Documentation

_D_a_t_a-_s_a_m_p_l_e

_D_e_s_c_r_i_p_t_i_o_n:

     Flood Estimation Handbook flood peak data CD-ROM.

_U_s_a_g_e:

      data(FEH1000)

_F_o_r_m_a_t:

     Data.frames:

     'am' is the data.frame of the annual maximum flows with 3 columns:
      'number', the code of the station;  'date', date of the annual
     maximum;  'year', year of the annual maximum (we consider
     hydrologic year: 1 october - 30 september); 'am', the value of the
     annual maximum flow [m3/s].

     'cd' is the data.frame of parameters of 1000 catchements with 24
     columns:  'number', the code of the station; 'nominal_area',
     catchment drainage area [km2]; 'nominal_ngr_x', basin outflow
     coordinates [m]; 'nominal_ngr_y', basin outflow coordinates [m];
     'ihdtm_ngr_x', basin outflow coordinates by Institute of Hydrology
     digital terrain model [m];  'ihdtm_ngr_y', basin outflow
     coordinates by Institute of Hydrology digital terrain model [m];
     'dtm_area', catchment drainage area [km2] derived by CEH using
     their DTM (IHDTM); 'saar4170', standard average annual rainfall
     1941-1970 [mm];  'bfihost', baseflow index derived from HOST soils
     data; 'sprhost', standard percentage runoff derived from HOST
     soils data; 'farl', index of flood attenuation due to reservoirs
     and lakes;  'saar', standard average annual rainfall 1961-1990
     [mm]; 'rmed_1d', median annual maximum 1-day rainfall [mm];
     'rmed_2d', median annual maximum 2-days rainfall [mm]; 'rmed_1h',
     median annual maximum 1-hour rainfall [mm]; 'smdbar', mean SMD
     (soil moisture deficit) for the period 1961-1990 calculated from
     MORECS month-end values [mm]; 'propwet', proportion of time when
     soil moisture deficit <=6 mm during 1961-90, defined using MORECS;
     'ldp', longest drainage path [km], defined by recording the
     greatest distance from a catchment node to the defined outlet;
     'dplbar', mean drainage path length [km]; 'altbar', mean catchment
     altitude [m]; 'dpsbar', mean catchement slope [m/km]; 'aspbar',
     index representing the dominant aspect of catchment slopes (its
     values increase clockwise from zero to 360, starting from the
     north). Mean direction of all inter-nodal slopes with north being
     zero; 'aspvar', index describing the invariability in aspect of
     catchment slopes. Values close to one when all slopes face a
     similar direction; 'urbext1990', extent of urban and suburban land
     cover in 1990 [fraction].

_N_o_t_e:

     For information on the package and the Author, and for all the
     references, see 'nsRFA'.

_S_o_u_r_c_e:

     http://www.environment-agency.gov.uk/hiflowsuk/

_E_x_a_m_p_l_e_s:

     data(FEH1000)
     names(cd)
     am[1:20,]

