FLOOD10359 ‎(2)‎

• County: Delta
• Community: Delta County
• Stream Name: Minnesota Creek
• Title: Supplemental 100 Year Flood Study for Minnesota Creek
• Date: 9/1/2002
• Prepared For: Delta County
• Prepared By: Buckhorn Geotech
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Errors Warnings a otes for Plan: Plan 01 (Continued)
Warning: The velocity head has changed by more than 0.5 ft (0.15 m). This may indicate the need for
additional cross sections,
Warning: The coiweyance ratio (upstream conveyance divided by downstream conveyance) is less than 0.7
or greater than 1.4. This may indicate the need for additional cross sections.
Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and previous cross section.
This may indicate the need for additional cross sections.
Warning: During the standard step iterations. when the assumed water surface was set equal to critical depth,
the calculated water surface came back below C1itical depth. This indicates that there is not a valid
subcritical answer. The program defaulted to C1itical depth.
Location: River: minnesota Reach: 1 RS: 6852 Profile: PF 1
Warning: The velocity head has changed by more than 0.5 ft (0.15 m). This may indicate the need for
additional cross sections.
Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and previous cross section.
This may indicate the need for additional cross sections,
Location: River: minnesota Reach: 1 RS: 6654.25" Profile: PF 1
Warning: The energy equation could not be balanced within the specified number of iterations. The program
used critical depth for the water surface and continued on with the calculations.
Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and previous cross section.
This may indicate the need for additional cross sections.
Location: River: minnesota Reach: 1 RS: 6456.5" Profile: PF 1
Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and previous cross section.
This may indicate the need for additional cross sections.
Location: River: minnesota Reach: 1 RS: 6258.75" Profile: PF 1
Warning: The energy equation could not be balanced within the specified number of iterations. The program
used critical depth for the water surface and continued on with the calculations.
Warning: The energy loss was greater than 1.0 ft (0,3 m). between the current and previous cross section,
This may indicate the need for additional cross sections.
Location: River: minnesota Reach: 1 RS: 6061 Profile: PF 1
Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and previous cross section.
This may indicate the need for additional cross sections.
Location: River: minnesota Reach: 1 RS: 5860.5" Profile: PF 1
Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and previous cross section.
This may indicate the need for additional cross sections.
Location: River: minnesota Reach: 1 RS: 5660.- Profile: PF 1
Warning: The energy loss was greater than 1.0 ft (0,3 m), between the current and previous cross section.
This may indicate the need for additional cross sections.
Location: River: minnesota Reach: 1 RS: 5459.5" Profile: PF 1
Warning: The energy loss was greater than 1.0 ft (0,3 m). between the current and previous cross section,
This may indicate the need for additional cross sections.
Location: River: minnesota Reach: 1 RS: 5259 Profile: PF 1
Note: Hydraulic jump has occurred between this cross section and the previous upstream section.
Location: River: minnesota Reach: 1 RS: 5093 Profile: PF 1 Culv: Culvert #1
Note: The normal depth exceeds the height of the culvert. The program assumes that the normal depth is
equal to the height of the culvert.
Location: River: minnesota Reach: 1 RS: 5092 Profile: PF 1
Warning: The cross-section end points had to be extended vertically for the computed water surface.
Warning: The velocity head has changed by more than 0.5 ft (0.15 m). This may indicate the need for
additional cross sections.
Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than 0.7
or greater than 1.4. This may indicate the need for additional cross sections.
Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and previous cross section.
This may indicate the need for additional cross sections.
Location: River: minnesota Reach: 1 RS: 4983 Profile: PF 1

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