DIN 19700-12:1986-01

1 Field of application
2 Flood retention and development of waterway
3 Basic capacity and capacity levels
      3.1 Basin capacity
      3.2 Flood retention capacity
      3.3 Permanent storage capacity
      3.4 Capacity levels
4 Classification of flood retarding basins
      4.1 Classification according to size
      4.2 Classification according to position in
             relation to waterway
      4.3 Classification according to mode of operation
5 Evaluation of hydrological parameters
      5.1 General
      5.2 Precipitation
             5.2.1 Precipitation as a function of its
                      occurrence in time and area
             5.2.2 Intensity and duration of precipitation
             5.2.3 Precipitation frequency
             5.2.4 Effective precipitation
      5.3 Runoff
             5.3.1 Peak runoff
             5.3.2 Runoff volume
             5.3.3 Determination of design flood
      5.4 Discharge hydrograph and peak runoff
             5.4.1 Determination from precipitation
             5.4.2 Determination from runoffs
6 Choice of recurrence intervals
      6.1 Recurrence interval for design of flood
             retention capacity
      6.2 Recurrence interval for design of spillway
7 Design of flood retention capacity
      7.1 Basin capacity
      7.2 Ordinary flood retention capacity
             7.2.1 Uncontrolled plants
             7.2.2 Controlled plants
      7.3 Extraordinary flood retention capacity
      7.4 Free capacity
      7.5 Basin capacity for other purposes
8 Design of spillway
9 Hydraulic design of operating facilities
      9.1 Undersluice and service outlet
      9.2 Spillway
      9.3 Energy dissipating devices
      9.4 Combined structures
      9.5 Testing on models
10 Structural design
      10.1 Earth dams
      10.2 Masonry dams
      10.3 Land depressions and seepage
      10.4 Basin area
             10.4.1 Dead storage area
             10.4.2 Permanent storage area
             10.4.3 Upstream weirs and dividing weirs
             10.4.4 Auxiliary facilities
             10.4.5 Development of waterway
             10.4.6 Drainage
      10.5 Service outlet
             10.5.1 Intake structure
             10.5.2 Piping
             10.5.3 Shut-off devices
             10.5.4 Outlet structure
      10.6 Spillway
             10.6.1 Non-adjustable spillways
             10.6.2 Discharge channel
             10.6.3 Siphon spillways
      10.7 Combined structures
      10.8 Isolated intake structures
11 Measuring devices
      11.1 Measurement of inflow, discharge and water level
      11.2 Measurement of precipitation
12 Commissioning, operation, maintenance
      12.1 Commissioning
      12.2 Operation
      12.3 Basin register
      12.4 Maintenance of structure
             12.4.1 Observation
             12.4.2 Maintenance works
                      12.4.2.1 Servicing
                      12.4.2.2 Repairs
13 Flood retarding basin systems
      13.1 Principles
      13.2 Mode of operation
      13.3 Control