{"id":92,"date":"2018-04-27T21:05:24","date_gmt":"2018-04-27T21:05:24","guid":{"rendered":"https:\/\/learn.hydrologystudio.com\/studio-express\/?post_type=ht_kb&p=92"},"modified":"2018-04-27T21:06:44","modified_gmt":"2018-04-27T21:06:44","slug":"nrcs-curve-numbers-cn","status":"publish","type":"ht_kb","link":"https:\/\/learn.hydrologystudio.com\/studio-express\/knowledge-base\/nrcs-curve-numbers-cn\/","title":{"rendered":"NRCS Curve Numbers (CN)"},"content":{"rendered":"\n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\n\t
Land Use Description<\/strong><\/th>Hydrologic Soil Group<\/th>\n<\/tr>\n<\/thead>\n
Residential<\/strong><\/td>A<\/strong><\/td>B<\/strong><\/td>C<\/strong><\/td>D<\/strong><\/td>\n<\/tr>\n
Average Lot Size<\/td><\/td><\/td><\/td><\/td>\n<\/tr>\n
1\/8 acre or less<\/td>77<\/td>85<\/td>90<\/td>92<\/td>\n<\/tr>\n
1\/4 acre<\/td>61
\n<\/td>		75<\/td>83<\/td>87<\/td>\n<\/tr>\n
1\/3 acre
\n<\/td>		57<\/td>72<\/td>81<\/td>86<\/td>\n<\/tr>\n
1\/2 acre
\n<\/td>		54<\/td>70<\/td>80<\/td>85<\/td>\n<\/tr>\n
1 acre
\n<\/td>		51<\/td>68<\/td>79<\/td>84<\/td>\n<\/tr>\n
2 acre
\n<\/td>		46<\/td>65<\/td>77<\/td>82<\/td>\n<\/tr>\n
<\/td><\/td><\/td><\/td><\/td>\n<\/tr>\n
Paved parking, roofs<\/strong><\/td>98<\/td>98<\/td>98<\/td>98<\/td>\n<\/tr>\n
<\/td><\/td><\/td><\/td><\/td>\n<\/tr>\n
Streets and Roads<\/strong><\/td><\/td><\/td><\/td><\/td>\n<\/tr>\n
Paved with curbs<\/td>98<\/td>98<\/td>98<\/td>98<\/td>\n<\/tr>\n
Gravel
\n<\/td>		76<\/td>85<\/td>89<\/td>91<\/td>\n<\/tr>\n
Dirt
\n<\/td>		72<\/td>82<\/td>87<\/td>89<\/td>\n<\/tr>\n
<\/td><\/td><\/td><\/td><\/td>\n<\/tr>\n
Commercial and business areas <\/strong><\/td>89
\n<\/td>		92<\/td>94<\/td>95<\/td>\n<\/tr>\n
<\/td><\/td><\/td><\/td><\/td>\n<\/tr>\n
Industrial districts<\/strong>\t
\n<\/td>		81<\/td>88<\/td>91<\/td>93<\/td>\n<\/tr>\n
<\/td><\/td><\/td><\/td><\/td>\n<\/tr>\n
Open spaces, lawns, parks<\/strong><\/td><\/td><\/td><\/td><\/td>\n<\/tr>\n
good condition<\/td>39
\n<\/td>		61<\/td>74<\/td>80<\/td>\n<\/tr>\n
fair condition
\n<\/td>		49<\/td>69<\/td>79<\/td>84<\/td>\n<\/tr>\n
<\/td><\/td><\/td><\/td><\/td>\n<\/tr>\n
Fallow<\/strong>
\n<\/td>		77<\/td>86<\/td>91<\/td>94<\/td>\n<\/tr>\n
Row Crops
\n<\/td>		72<\/td>81<\/td>88<\/td>91<\/td>\n<\/tr>\n<\/tbody>\n
Source: Soil Conservation Service TR-55<\/em><\/th>\n<\/tr>\n<\/tfoot>\n<\/table>\n\n","protected":false},"excerpt":{"rendered":"

Curve Numbers for NRCS hydrographs<\/p>\n","protected":false},"author":1,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[23],"ht-kb-tag":[],"class_list":["post-92","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-useful-tables"],"_links":{"self":[{"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/ht-kb\/92","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/comments?post=92"}],"version-history":[{"count":2,"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/ht-kb\/92\/revisions"}],"predecessor-version":[{"id":94,"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/ht-kb\/92\/revisions\/94"}],"wp:attachment":[{"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/media?parent=92"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/ht-kb-category?post=92"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/ht-kb-tag?post=92"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}