FLOOD11632 ‎(2)‎

• County: Costilla
• Community: Costilla County
• Stream Name: Rito Seco
• Basin: Rio Grande
• Title: Approximate Floodplain - Rito Seco
• Date: 1/5/2007
• Prepared For: Costilla County
• Prepared By: HDR Engineering, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

costilla.rep
the need for additional cross sections.
Note: Multiple critical depths were found at this location. The critical depth with the lowest,
valid, water surface was
used.
River: Rio Seco Reach: 1 R5: 2785 Profile: 5-Year
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 energx 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.
Note: Multiple critical depths were found at this location. The critical depth with the lowest,
valid, water surface was
used.
River: Rio Seco Reach: 1 RS: 2785 Profile: 10-Year
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 ind~cate
the need for additional cross sections.
Note: Multiple critical depths were found at this location. The critical depth with the lowest,
valid, water surface was
used.
River: Rio Seco Reach: 1 R5: 2785 Profile: 25-Year
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 ind~cate
the need for additional cross sections.
Note: Multiple critical depths were found at this location. The critical depth with the lowest,
valid, water surface was
used.
River: Rio Seco Reach: 1 R5: 2785 Profile: 50-Year
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.
Note: Multiple critical depths were found at this locat~on. The critical depth with the lowest,
valid, water surface was
used.
River: Rio Seco Reach: 1 R5: 2785 Profile: 100-Year
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 (~.3 m), between the current and previous cross
section. This may indicate
the need for additional cross sections.
Note: Multiple critical depths were found at this location. The critical depth with the lowest,
valid, water surface was
used.
River: Rio Seco Reach: 1 R5: 2785 Profile: 200-Year
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.
Note: Multiple critical depths were found at this location. The critical depth with the lowest,
valid, water surface was
used.
River: Rio Seco Reach: 1 R5: 2785 Profile: 500-Year
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.
Note: Multiple critical depths were found at this location. The critical depth with the lowest,
valid, water surface was
used.
River: Rio seco Reach: 1 Rs: 2785 Profile: PF 9
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:oivided fl ow computed for this cross-section.
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.
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