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
0.000441 1.57 1706.55 951.03 0.16
1 427 2-Year 104.00 8011.00 8012.60 8011.64 8012.65
0.001505 1.86 55.95 35.00 0.26
1 427 5-Year 183.00 8011.00 8013.17 8011.96 8013.26
0.001752 2.41 75.93 35.00 0.29
1 427 10-Year 254.00 8011.00 8013.54 8012.18 8013.67
0.002042 2.86 88.94 35.00 0.32
1 427 25-vear 295.00 8011.00 8013.71 8012.31 8013.86
0.002258 3.11 94.71 35.00 0.33
1 427 50-Year 435.00 8011.00 8013.55 8012.70 8013.92
0.005929 4.88 89.23 35.00 0.54
1 427 100-Year 522.00 8011.00 8013.82 8012.92 8014.26
0.006190 5.28 98.80 35.00 0.55
1 427 200-Year 615.00 8011.00 8014.10 8013.13 8014.60
0.006382 5.66 108.61 35.00 0.57
1 427 500-Year 755.00 8011.00 8014.50 8013.46 8015.09
0.006585 6.16 122.62 35.00 0.58
1 427 PF 9 1510.00 8011.00 8017.32 8014.89 8017.35
0.000325 1.90 1755.68 1130.98 0.13
1 410 Sridge
1 400.5 2-Year 104.00 8011.00 8012.56 8011.64 8012.61
0.001645 1.91 54.43 35.00 0.27
1 400.5 5-Year 183.00 8011.00 8013.12 8011.96 8013.21
0.001887 2.47 74.17 35.00 0.30
1 400.5 10-Year 254.00 8011.00 8013.48 8012.18 8013.62
0.002200 2.92 86.87 35.00 0.33
1 400.5 25-Year 295.00 8011.00 8013.64 8012.31 8013.80
0.002443 3.19 92.39 35.00 0.35
1 400.5 50-Year 435.00 8011.00 8013.22 8012.70 8013.70
0.009265 5.61 77.52 35.00 0.66
1 400.5 100-Year 522.00 8011.00 8013.46 8012.92 8014.03
0.009553 6.06 86.12 35.00 0.68
1 400.5 200-Year 615.00 8011.00 8013.72 8013.13 8014.37
0.009622 6.45 95.31 35.00 0.69
1 400.5 500-vear 755.00 8011.00 8014.11 8013.46 8014.86
0.009539 6.93 108.90 35.00 0.69
1 400.5 PF 9 1510.00 8011.00 8015.13 8014.89 8016.83
0.015802 10.44 144.63 35.00 0.91
1 100 2-Year 104.00 8009.92 8011.46 8011.13 8011.63
0.008403 3.28 31.74 33.31 0.59
1 100 5-Year 183.00 8009.92 8011.89 8011.50 8012.13
0.008404 3.89 47.08 38.21 0.62
1 100 10-Year 254.00 8009.92 8012.14 8011.77 8012.40
0.008410 4.21 79.89 223.32 0.63
1 100 25-vear 295.00 8009.92 8012.23 8011.89 8012.49
0.008413 4.32 100.84 250.64 0.63
1 100 50-Year 435.00 8009.92 8012.50 8012.50 8012.53
0.001722 2.10 455.93 792.30 0.29
1 100 100-Year 522.00 5009.92 8012.50 8012.50 8012.54
0.002480 2.52 455.93 792.30 0.35
1 100 200-Year 615.Q0 8009.92 8Q12.50 8012.50 8012.56
0.003442 2.97 455.93 792.30 0.41
1 100 500-Year 755.00 8009.92 8012.50 8012.50 8012.59
0.005188 3.64 455.93 792.30 0.51
1 100 PF 9 1510.00 8009.92 8012.72 8012.59 8012.87
0.008409 4.93 644.53 883.36 0.65
ERRORS WARNINGS AND NOTES
Errors warnings and Notes for Plan : All Main
River: Rio 5eco Reach: 1 R5: 2785 Profile: 2-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
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