CRDSS_Task1_15-12_DataManagementInterfaceToEstimateMonthlyNetReservoirEvap

• Title: CRDSS Task 1.15-12 - Water Rights Planning Model - Data Management Interface to Estimate Monthly Net Reservoir Evaporation
• Description: This task memorandum documents the design considerations of the data management interface ‎(DMI)‎ that will estimate the net monthly evaporation for a reservoir.
• Decision Support - Doc Type: Task Memorandum
• Date: 1/9/1995
• DSS Category: Surface Water
• DSS: Colorado River
• Basin: Colorado Mainstem
• Contract/PO #: C153658, C153727, C153752
• Grant Type: Non-Reimbursable
• Bill Number: SB92-87, HB93-1273, SB94-029, HB95-1155, SB96-153, HB97-008
• Prepared By: Riverside Technology inc.

6.The user may request a statistical summary of the net reservoir evaporation time series by using the -
command line option. An example of the statistical matrix output format is shown below.
matrix
TS Header Card = 12340000U 10/1950 - 9/1990 MAP IN 6 UPPER AREA (10F8.2)
Project TS ID = BONM8_U.MAP6
HMData TS ID = BONM8_U.MAP6
Data File = /HMData/ts/MAP/BONM8_U.MAP6
Data Type = MAP
Original Data Units = IN
Output Data Units = IN
Data Interval = 6 hours
Output Table Info = Sum of values for month
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total
---- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- - --------- ----------
1950 - - - - - - - - - 6.22 7.89 5.06 NC
1951 4.27 6.04 4.35 5.33 2.86 3.13 2.26 2.04 2.85 6.68 5.41 7.52 52.74
1952 2.91 3.12 2.68 0.19 4.77 2.49 0.95 0.84 1.09 0.64 3.13 3.17 25.98
1953 10.57 4.98 1.65 3.87 5.85 4.15 0.14 0.63 1.19 0.50 3.50 5.00 42.03
1954 9.03 3.82 2.13 4.15 1.81 3.86 0.72 2.35 2.54 2.64 2.54 1.72 37.31
1955 1.73 3.76 3.99 2.61 3.39 4.37 3.69 0.00 0.72 3.32 8.10 6.85 42.53
1956 2.82 3.16 3.47 2.09 2.52 4.18 2.55 1.28 0.75 3.40 2.80 5.65 34.67
1957 5.52 2.64 2.10 2.37 5.41 1.96 0.87 1.24 1.09 3.47 2.53 6.00 35.20
1958 3.13 4.36 1.61 4.26 2.66 6.39 1.84 1.05 2.36 3.95 9.96 6.35 47.92
1959 7.63 5.05 2.20 2.87 3.84 3.16 0.26 1.89 3.95 9.73 9.86 0.93 51.37
1960 3.07 2.38 3.08 3.23 2.53 0.85 0.42 2.23 1.03 2.14 3.35 2.18 26.49
1961 2.17 3.78 3.24 5.02 3.82 0.52 0.89 0.49 2.62 3.47 5.80 4.34 36.16
1962 4.47 3.07 2.29 4.16 5.23 3.18 0.67 1.59 1.18 5.01 3.23 2.60 36.68
1963 6.91 3.65 2.30 2.71 1.45 4.97 0.54 0.68 2.55 2.93 2.56 4.30 35.55
1964 6.96 2.10 3.21 5.93 5.07 4.22 1.70 1.52 1.41 2.17 4.64 9.59 48.52
1965 7.42 3.23 2.24 5.89 1.56 2.88 1.48 2.08 4.52 0.27 5.13 1.36 38.06
1966 6.18 3.32 1.67 1.93 2.20 4.29 0.97 1.19 0.57 4.18 4.63 4.29 35.42
1967 8.41 4.61 3.39 3.29 3.54 3.81 0.45 0.22 1.35 8.12 3.05 5.14 45.38
1968 3.91 3.25 1.21 1.77 1.85 2.91 0.15 1.76 4.68 1.53 3.39 4.84 31.25
1969 13.66 1.07 1.87 1.90 2.85 5.82 0.90 0.05 1.22 3.26 1.35 2.21 36.16
1970 8.98 2.87 3.01 3.20 3.14 4.52 2.76 0.09 0.96 3.48 5.10 3.81 41.92
1971 13.56 3.39 3.42 2.63 2.59 2.07 0.44 1.88 0.92 1.82 3.55 6.28 42.55
1972 9.33 6.02 4.13 2.87 1.75 2.19 1.58 1.27 2.48 2.65 1.86 4.40 40.53
1973 2.02 0.54 1.10 1.91 1.12 1.65 0.01 0.95 2.48 3.00 6.85 5.01 26.64
1974 7.81 2.41 4.38 1.46 1.93 2.01 1.07 2.38 0.96 1.01 3.17 3.97 32.56
1975 10.31 3.91 2.48 6.41 3.58 4.01 2.21 3.64 1.63 11.37 6.22 7.10 62.87
1976 5.15 3.69 1.49 2.52 1.99 3.19 1.29 1.87 1.22 0.79 2.70 2.24 28.14
1977 4.18 1.26 2.59 0.15 3.02 0.75 1.43 1.43 2.78 3.26 4.92 10.94 36.71
1978 4.56 2.14 1.32 4.51 3.62 0.77 2.56 1.60 2.25 0.30 4.30 5.71 33.64
1979 3.08 5.33 2.84 3.85 1.44 0.69 0.43 2.85 0.35 2.13 1.05 4.08 28.12
1980 5.02 2.08 3.61 3.02 8.20 5.60 1.26 1.06 2.91 2.05 3.22 5.52 43.55
1981 1.25 3.60 2.97 2.78 5.31 4.42 1.21 0.70 1.58 2.12 2.20 5.53 33.67
1982 7.61 5.36 4.11 3.79 3.31 2.91 1.63 0.75 2.43 2.48 2.77 4.32 41.47
1983 3.33 2.87 2.39 1.69 4.29 2.31 4.21 1.44 2.13 1.27 4.06 3.67 33.66
1984 3.06 1.63 3.64 4.05 3.38 3.42 0.75 2.20 2.70 3.49 3.98 4.94 37.24
1985 1.02 3.23 1.86 2.29 1.81 1.21 0.06 3.43 6.14 3.08 4.39 1.32 29.84
1986 3.83 6.17 1.40 2.53 2.43 2.19 1.80 1.30 2.77 0.87 5.24 1.53 32.06
1987 2.07 1.90 3.44 1.45 2.77 1.94 3.03 1.14 0.48 0.36 1.33 3.43 23.34
1988 3.57 4.51 3.48 2.42 3.74 1.95 0.95 0.39 1.44 4.10 4.97 3.30 34.82
1989 5.75 2.60 5.53 3.51 2.87 1.59 2.19 4.68 1.03 1.94 4.89 4.54 41.12
1990 6.43 3.25 2.47 2.32 5.25 2.25 0.89 2.91 0.21 - - - NC
==== ========== ========== ========== ========== ========== ========== ========== ========== ========== ========== ========== = ========= ==========
Tot 222.69 136.15 110.34 122.93 130.75 118.78 53.21 61.09 77.52 125.20 169.62 180.74 1463.87
---- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- - --------- ----------
AT 222.69 136.15 110.34 122.93 130.75 118.78 53.21 61.09 77.52 125.20 169.62 180.74 1501.40
---- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- - --------- ----------
Num 40 40 40 40 40 40 40 40 40 40 40 40 39
---- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- - --------- ----------
Min 1.02 0.54 1.10 0.15 1.12 0.52 0.01 0.00 0.21 0.27 1.05 0.93 23.34
---- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- - --------- ----------
Max 13.66 6.17 5.53 6.41 8.20 6.39 4.21 4.68 6.14 11.37 9.96 10.94 62.87
---- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- - --------- ----------
Mean 5.57 3.40 2.76 3.07 3.27 2.97 1.33 1.53 1.94 3.13 4.24 4.52 37.54
---- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- - --------- ----------
Med 4.79 3.25 2.63 2.82 2.94 3.00 1.02 1.36 1.51 2.79 3.76 4.37 36.16
---- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- - --------- ----------
Sdev 3.18 1.35 1.02 1.42 1.49 1.48 0.99 1.02 1.28 2.44 2.10 2.14 8.12
---- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- - --------- ----------
Notes: (1) - = Month is not in the period of record for the TS.
(2) NC = Value is not calculated due to missing data.
The month is not included in the statistical analysis.
(3) AT = Adjusted total, which is Tot(40/Num) to account for
unequal number of months in data.
(4) All monthly tabulated values are SUMS for the month. All
totals are sums of the monthly values. All statistics are
based on the monthly sums shown in the table.
3.0 CONCLUSIONS AND RECOMMENDATIONS
This task memorandum addresses DMI utility design considerations for estimating net monthly reservoir
evaporation.
The DMI utility creates either a historical net evaporation time series, 12 net evaporation values (one for
each month), or a statistical matrix summarizing the time series for each specified reservoir. The DMI
utility takes user specified precipitation and evaporation stations to estimate values of net evaporation.
Options are available for the user to specify output format, output units, station weighting factors, station
pan coefficients, and geographic correction factors.
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A275 01.09.95 1.15-12 Ritsch