ONLINE CALCULATIONS AVAILABLE AT

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Copyright © 2007-2011.
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♦ HYDRAULICS ♦

Normal and critical depth

01.   Normal depth in a prismatic channel

02.   Critical depth in a prismatic channel

03.   Discharge in a partially full circular culvert

04.   Critical slope in a prismatic channel

05.   Normal and critical depth in a prismatic channel

06.   Normal depth in a partially full circular culvert

07.   Critical depth in a circular culvert or pipe


Control of flow, hydraulic jump

11.   Sequent depth in a hydraulic jump

12.   Energy loss in a hydraulic jump

13.   Discharge under a sluice gate

14.   Discharge over a broad crested weir

15.   Discharge in a prismatic channel

16.   Initial and sequent depths in a hydraulic jump

17.   Critical flow in width constriction

18.   Efficiency of the hydraulic jump


Water-surface profiles

21.   M1 water-surface profile

22.   M2 water-surface profile

23.   M3 water-surface profile

24.   S1 water-surface profile

25.   S2 water-surface profile

26.   S3 water-surface profile


Water-surface profiles 2

31.   C1 water-surface profile

32.   H2 water-surface profile

33.   A2 water-surface profile

34.   C3 water-surface profile

35.   H3 water-surface profile

36.   A3 water-surface profile


Channel design, spillways

41.   Tractive force method

42.   Ogee spillway rating


Pipe flow

51.   Hazen-Williams formula

52.   Parallel pipes

53.   Pipes connecting three reservoirs



♦ HYDROLOGY ♦

Peak discharge

61.   Creager formula

62.   Rational method

63.   Slope-area method


Routing

71.   Linear reservoir

72.   Storage-indication (linear)

73.   Storage-indication

74.   Muskingum

75.   Muskingum-Cunge

76.   Time-area method

77.   Clark unit hydrograph

78.   Cascade of linear reservoirs


Regression

81.   Linear regression

82.   Nonlinear regression

83.   Multiple linear regression

84.   Multiple nonlinear regression

85.   Hyperbolic regression


Evapotranspiration

91.   Blaney-Criddle

92.   Penman

93.   Penman-Monteith for reference crop

94.   Priestley-Taylor

95.   Thornthwaite

96.   Penman-Monteith for ecosystems


Flood frequency

101.   Gumbel method

102.   Log Pearson III method

103.   Gumbel method (10000 yr)

104.   Log Pearson III method (10000 yr)

105.   TR-55 graphical method

106.   NRCS curve number


Unit hydrographs

111.   Flood hydrograph by convolution

112.   Change in unit hydrograph duration using S-hydrograph

113.   Unit hydrograph by the cascade of linear reservoirs

114.   Dimensionless unit hydrograph by the cascade of linear reservoirs

115.   General unit hydrograph by the cascade of linear reservoirs

116.   Series of unit hydrographs by the cascade of linear reservoirs

117.   All series of unit hydrographs by the cascade of linear reservoirs


Time of concentration

120.   Time of concentration of small watersheds


Water balance

130.   Water balance


Sediment properties, sediment yield

141.   Fall velocity of a spherical sediment particle

142.   Specific weight of sediments by Lane-Koelzer

143.   Universal Soil Loss Equation

144.   Universal Soil Loss Equation (composite watershed)

145.   Sediment yield by the Dendy and Bolton formula

146.   Initiation of motion using the Shields criterion

147.   Reservoir design life


Sediment transport formulas

151.   Duboys formula

152.   Meyer-Peter formula

153.   Colby 1957 method

154.   Colby 1964 method

155.   Modified Einstein Procedure

156.   Pier and abutment scour using Melville equation



♦ WATER QUALITY ♦

161.   DO sag curve

162.   DO sag analysis

163.   Oxygenation constant

164.   Total dissolved solids (TDS) based on electrical conductivity (EC)



♦ OTHER PROGRAMS ♦

Calculators, calendar

171.   Calculator (2 operands)

172.   Calculator (3 operands)

173.   Scientific calculator

174.   Programs in Spanish [24]

175.   Perpetual calendar


♦ These programs are a service of the Visualab at San Diego State University, San Diego, California.
Please send your comments and suggestions to:    ponceatponcedot sdsudotedu ♦
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