Difference between revisions of "Curve numbers for antecedent mositure condition 2"
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| − | <font size=3>Curve numbers for antecedent moisture condition | + | <font size=3>Curve numbers for antecedent moisture condition II (Source NRCS).</font size><br> |
Link to this [[Curve numbers for antecedent moisture condition 2|table]] | Link to this [[Curve numbers for antecedent moisture condition 2|table]] | ||
<table class="sortable"><tr> | <table class="sortable"><tr> | ||
| − | <th rowspan="2">Land use description</th> | + | <th rowspan="2"><center>Land use description</center></th> |
| − | <th colspan="4">Hydrologic soil group</th> | + | <th colspan="4"><center>Hydrologic soil group</center></th> |
</tr> | </tr> | ||
<tr> | <tr> | ||
| Line 19: | Line 19: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td colspan="5">'''Forest'''</td> |
| − | |||
| − | |||
| − | |||
| − | |||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>Poor</td> |
| − | <td> | + | <td>45</td> |
| − | <td> | + | <td>66</td> |
| − | <td> | + | <td>77</td> |
| − | <td> | + | <td>83</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>Fair</td> |
| − | <td> | + | <td>36</td> |
| − | <td> | + | <td>60</td> |
| − | <td> | + | <td>73</td> |
| − | <td> | + | <td>79</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>Good</td> |
| − | <td> | + | <td>30</td> |
| − | <td> | + | <td>55</td> |
| − | <td> | + | <td>70</td> |
| − | <td> | + | <td>77</td> |
| + | </tr> | ||
| + | <tr> | ||
| + | <td colspan="5">'''Open space'''</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>Poor</td> | ||
| + | <td>68</td> | ||
| + | <td>79</td> | ||
| + | <td>86</td> | ||
| + | <td>89</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>fair</td> | ||
| + | <td>49</td> | ||
| + | <td>69</td> | ||
| + | <td>79</td> | ||
| + | <td>84</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>Good</td> | ||
| + | <td>39</td> | ||
| + | <td>61</td> | ||
| + | <td>74</td> | ||
| + | <td>80</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>Commercial 85% impervious</td> | ||
| + | <td>89</td> | ||
| + | <td>92</td> | ||
| + | <td>94</td> | ||
| + | <td>95</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>industrial 72% impervious</td> | ||
| + | <td>81</td> | ||
| + | <td>88</td> | ||
| + | <td>91</td> | ||
| + | <td>93</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td colspan="5">'''Residential'''</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>1/8 acre lots (65% impervious)</td> | ||
| + | <td>77</td> | ||
| + | <td>85</td> | ||
| + | <td>90</td> | ||
| + | <td>92</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>1/4 acre lots (38% impervious)</td> | ||
| + | <td>61</td> | ||
| + | <td>75</td> | ||
| + | <td>83</td> | ||
| + | <td>87</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>1/2 acre lots (25% impervious)</td> | ||
| + | <td>54</td> | ||
| + | <td>70</td> | ||
| + | <td>80</td> | ||
| + | <td>85</td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>1 acre lots (20% impervious)</td> |
| − | <td> | + | <td>51</td> |
| − | <td> | + | <td>68</td> |
| − | <td> | + | <td>79</td> |
| − | <td> | + | <td>84</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>'''Impervious areas'''</td> |
| − | <td> | + | <td>98</td> |
| − | <td> | + | <td>98</td> |
| − | <td> | + | <td>98</td> |
| − | <td> | + | <td>98</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td colspan="5">'''Roads (including right of way)'''</td> |
| − | |||
| − | |||
| − | |||
| − | |||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>Paved</td> |
| − | <td> | + | <td>83</td> |
| − | <td> | + | <td>89</td> |
| − | <td> | + | <td>92</td> |
| − | <td> | + | <td>93</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>Gravel</td> |
| − | <td> | + | <td>76</td> |
| − | <td> | + | <td>85</td> |
| − | <td> | + | <td>89</td> |
| − | <td> | + | <td>91</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>Dirt</td> |
| − | <td> | + | <td>72</td> |
| − | <td> | + | <td>82</td> |
| − | <td> | + | <td>87</td> |
| − | <td> | + | <td>89</td> |
</tr> | </tr> | ||
| + | <tr> | ||
| + | <td colspan="5">'''Row crops'''</td> | ||
| + | <tr> | ||
| + | <td>Straight row - good</td> | ||
| + | <td>67</td> | ||
| + | <td>78</td> | ||
| + | <td>85</td> | ||
| + | <td>89</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>Contoured row - good</td> | ||
| + | <td>65</td> | ||
| + | <td>75</td> | ||
| + | <td>82</td> | ||
| + | <td>86</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>'''Pasture - good'''</td> | ||
| + | <td>39</td> | ||
| + | <td>61</td> | ||
| + | <td>74</td> | ||
| + | <td>80</td> | ||
| + | <\tr> | ||
| + | <tr> | ||
| + | <td>'''Open water'''</td> | ||
| + | <td>99</td> | ||
| + | <td>99</td> | ||
| + | <td>99</td> | ||
| + | <td>99</td> | ||
| + | <\tr> | ||
</table> | </table> | ||
Revision as of 21:15, 7 March 2013
Curve numbers for antecedent moisture condition II (Source NRCS).
Link to this table
<\tr>
<\tr>
| A | B | C | D | |
|---|---|---|---|---|
| Meadow - good condition | 30 | 58 | 72 | 78 |
| Forest | ||||
| Poor | 45 | 66 | 77 | 83 |
| Fair | 36 | 60 | 73 | 79 |
| Good | 30 | 55 | 70 | 77 |
| Open space | ||||
| Poor | 68 | 79 | 86 | 89 |
| fair | 49 | 69 | 79 | 84 |
| Good | 39 | 61 | 74 | 80 |
| Commercial 85% impervious | 89 | 92 | 94 | 95 |
| industrial 72% impervious | 81 | 88 | 91 | 93 |
| Residential | ||||
| 1/8 acre lots (65% impervious) | 77 | 85 | 90 | 92 |
| 1/4 acre lots (38% impervious) | 61 | 75 | 83 | 87 |
| 1/2 acre lots (25% impervious) | 54 | 70 | 80 | 85 |
| 1 acre lots (20% impervious) | 51 | 68 | 79 | 84 |
| Impervious areas | 98 | 98 | 98 | 98 |
| Roads (including right of way) | ||||
| Paved | 83 | 89 | 92 | 93 |
| Gravel | 76 | 85 | 89 | 91 |
| Dirt | 72 | 82 | 87 | 89 |
| Row crops | ||||
| Straight row - good | 67 | 78 | 85 | 89 |
| Contoured row - good | 65 | 75 | 82 | 86 |
| Pasture - good | 39 | 61 | 74 | 80 |
| Open water | 99 | 99 | 99 | 99 |