{"id":830,"date":"2018-09-06T23:27:55","date_gmt":"2018-09-06T21:27:55","guid":{"rendered":"https:\/\/www.enviblog.cz\/blog\/?p=830"},"modified":"2018-09-07T07:48:33","modified_gmt":"2018-09-07T05:48:33","slug":"jen-kratke-destive-intermezzo","status":"publish","type":"post","link":"https:\/\/www.enviblog.cz\/blog\/2018\/09\/06\/jen-kratke-destive-intermezzo\/","title":{"rendered":"Jen kr\u00e1tk\u00e9 de\u0161tiv\u00e9 intermezzo…?!"},"content":{"rendered":"

V\u0161eobecn\u011b nep\u0159\u00edjemn\u00e9 sucho, kter\u00e9 n\u00e1s letos tr\u00e1p\u00ed, bylo po dva posledn\u00ed pr\u00e1zdninov\u00e9 v\u00edkendy p\u0159eru\u0161eno dv\u011bma de\u0161\u0165ov\u00fdmi epizodami. O prvn\u00ed z nich jsem zde psal minule, a sice jak jsem si ten tou\u017eebn\u011b o\u010dek\u00e1van\u00fd d\u00e9\u0161\u0165 u\u017e\u00edval Na St\u0159el\u00e1ku u piva… Moje optimistick\u00e1 touha po spravedliv\u00e9 d\u00e1vce de\u0161t\u011b v\u0161ak nerealisticky nadhodnotila velikost skute\u010dn\u00e9ho p\u0159\u00edd\u011blu a tud\u00ed\u017e jsem p\u0159edpov\u00eddal t\u0159eba to, \u017ee vstup do Altamiry v Amat\u00e9rsk\u00e9 jeskyni se o v\u00edkendu uzav\u0159e… A nestalo se tak.<\/em><\/p>\n

Povod\u00ed Punkvy nedostalo nijak velkou d\u00e1vku vody… Od p\u00e1te\u010dn\u00edho poledne 24.8. do ned\u011bln\u00edho r\u00e1na 26.8. zde spadlo 10.3 mm. A\u017e na malou „vlne\u010dku“ objemu asi 100 m3<\/sup> na B\u00edl\u00e9 vod\u011b v Hol\u0161t\u011bjn\u011b (plocha povod\u00ed 57,7\u00a0km2<\/sup>), kter\u00e1 na 4 hodiny zvedla pr\u016ftok z necel\u00e9ho vte\u0159inov\u00e9ho litru na 4 l\/s, se v severn\u00ed \u010d\u00e1sti Moravsk\u00e9ho krasu na na\u0161ich sond\u00e1ch neprojevilo nic. Pr\u016ftok Luhy na Vl\u010d\u00ed sk\u00e1le (plocha povod\u00ed 20.2 km2<\/sup>) z\u016fstal i nad\u00e1le na nule (u\u017e od za\u010d\u00e1tku \u010dervence) a Sloupsk\u00fd potok (plocha povod\u00ed 50.3\u00a0km2<\/sup>) pod soutokem Luhy se \u017d\u010f\u00e1rnou\u00a0a\u017e na krati\u010dk\u00e9 bou\u0159kov\u00e9 epizodky je st\u00e1le \u00fapln\u011b vyschl\u00fd u\u017e od konce kv\u011btna. V Maco\u0161e se hladina ani nehla a na Skaln\u00edm Ml\u00fdn\u011b pr\u016ftok taky ne. Jen ta zanedbateln\u00e1 vlnka v Hol\u0161tejn\u011b…<\/p>\n

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B\u00edl\u00e1 voda v Hol\u0161tejn\u011b. Nenechte se zm\u00e1st vodou v koryt\u011b toku, je prakticky nehybn\u00e1. Pr\u016ftok jsme odhadli na 7 dcl\/s. (foto Pavel Coufal – 29.8.2018)<\/figcaption><\/figure>\n

Posledn\u00ed pr\u00e1zdninov\u00fd v\u00edkend byl k povod\u00ed Punkvy o n\u011bco \u0161t\u011bd\u0159ej\u0161\u00ed. V sobotu 1.9. za\u010dalo pr\u0161et v 6 h r\u00e1no (pozn.: V\u0161echny \u010dasy jsou uv\u00e1d\u011bny v SE\u010c.) a pouze LG Hol\u0161tejn zareagoval na tento d\u00e9\u0161\u0165 zv\u00fd\u0161en\u00edm hladiny (na Skaln\u00edm Ml\u00fdn\u011b se hladina zvedla asi tak o p\u016fl cm, co\u017e odpov\u00edd\u00e1 chyb\u011b m\u011b\u0159en\u00ed, LG Vl\u010d\u00ed sk\u00e1la a Sloup po\u0159\u00e1d hl\u00e1s\u00ed nulu, hladina v Maco\u0161e st\u00e1le cynicky dr\u017e\u00ed sv\u016fj klesaj\u00edc\u00ed trend). Do 14 h odpoledne spadlo 10.4 mm sr\u00e1\u017eek. Pr\u0161et za\u010d\u00edn\u00e1 znovu ve 20 h a d\u00e9\u0161\u0165 vyzn\u00edv\u00e1 hodinu po p\u016flnoci. Te\u010f ve\u010der to d\u011bl\u00e1 12.4 mm, tak\u017ee celkov\u00fd sobotn\u00ed p\u0159\u00edd\u011bl vody je 22.8 mm. P\u0159epo\u010dteno na objem pro povod\u00ed B\u00edl\u00e9 vody po LG Hol\u0161tejn n\u00e1m tento sr\u00e1\u017ekov\u00fd \u00fahrn d\u00e1v\u00e1 1.315.560\u00a0m3<\/sup>, objem vlny, kterou sobotn\u00ed d\u00e9\u0161\u0165 zp\u016fsobil v Hol\u0161tejn\u011b jsem vy\u010d\u00edslil na 360 m3<\/sup>, to znamen\u00e1 odtokov\u00fd koeficient 0,03%, tedy v podstat\u011b nic, naprost\u00e1 v\u011bt\u0161ina vody se vs\u00e1kla.<\/p>\n

Dal\u0161\u00ed d\u00e9\u0161\u0165 nast\u00e1v\u00e1 v noci z ned\u011ble na pond\u011bl\u00ed, p\u0159esn\u011b 3.9. v 0:00. Hladina v Hol\u0161tejn\u011b se znovu za\u010d\u00edn\u00e1 zvedat chv\u00edli p\u0159ed \u010dtvrtou hodinou r\u00e1no, ale toto m\u011b\u0159en\u00ed je ji\u017e pravd\u011bpodobn\u011b ovlivn\u011bno lidskou rukou, kter\u00e1 asi lehce zvedla stav\u00edtko n\u011bjak\u00e9ho rybn\u00edku, jinak si konstantn\u00ed zv\u00fd\u0161en\u00ed pr\u016ftoku B\u00edl\u00e9 vody, kter\u00e9 nastalo v ned\u011bli p\u0159ed polednem, nedovedu vysv\u011btlit. Nicm\u00e9n\u011b, do dev\u00edti hodin r\u00e1no spadlo 14.4 mm. Vl\u010d\u00ed sk\u00e1la a Sloup st\u00e1le nereaguj\u00ed, ml\u010d\u00ed…<\/p>\n

P\u0159enesme se te\u010f z ponorov\u00e9 oblasti severn\u00ed \u010d\u00e1sti Moravsk\u00e9ho krasu k Punkevn\u00edm v\u00fdv\u011br\u016fm. Cesta vede skrz v\u00e1pencov\u00fd masiv, ve kter\u00e9m Sloupsk\u00fd potok, B\u00edl\u00e1 voda a jejich soutokem vznikaj\u00edc\u00ed Punkva vytv\u00e1\u0159\u00ed slo\u017eitou kask\u00e1du podzemn\u00edch jezer, jakousi p\u0159irozenou „p\u0159ehradu“. Tato samoz\u0159ejm\u011b postup vody brzd\u00ed, zvl\u00e1\u0161\u0165 jedn\u00e1-li se o tak mal\u00e9 mno\u017estv\u00ed vody, kter\u00e9 horn\u00ed povod\u00ed v\u016fbec pust\u00ed dol\u016f… Proto tak\u00e9 hladina Punkvy na dn\u011b Macochy reaguje na on\u011bch sobotn\u00edch 22.8 mm a\u017e v ned\u011bli kolem sedm\u00e9 r\u00e1no a to jen pozvoln\u00fdm r\u016fstem hladiny. A na Skaln\u00edm Ml\u00fdn\u011b se jej\u00ed hladina za\u010d\u00edn\u00e1 decentn\u011b zvedat a\u017e v pond\u011bl\u00ed 3.9. v 9 h r\u00e1no… po no\u010dn\u00edm de\u0161ti (v\u00fd\u0161e uveden\u00fdch 14.4. mm). Spo\u010d\u00edtat objem vlny na Skaln\u00edm Ml\u00fdn\u011b nen\u00ed zat\u00edm mo\u017en\u00e9, proto\u017ee dal\u0161\u00ed d\u00e9\u0161\u0165 p\u0159i\u0161el je\u0161t\u011b v \u00fater\u00fd a ve st\u0159edu (tato sr\u00e1\u017ekov\u00e1 data nem\u00e1m zat\u00edm k dispozici) a voda sem z jeskyn\u00ed st\u00e1le dot\u00e9k\u00e1. Tak\u00e9 je zde ono „ovlivn\u011bn\u00ed“ z Hol\u0161tejna, kter\u00e9 n\u00e1m to cel\u00e9 trochu kaz\u00ed…<\/p>\n

\u00datern\u00ed a st\u0159ede\u010dn\u00ed sr\u00e1\u017ekov\u00e9 \u00fahrny v\u0161ak kone\u010dn\u011b vr\u00e1tily vodu Luhy do jej\u00edho koryta u LG Vl\u010d\u00ed sk\u00e1la (5.9. v 19 h), no i kdy\u017e… Pr\u016ftok se zde d\u00e1 po\u010d\u00edtat maxim\u00e1ln\u011b na decilitry za sekundu… Pr\u00e1v\u011b tady mi p\u0159ich\u00e1z\u00ed na mysl, \u017ee „nen\u00ed nula jako nula“, respektive, jak\u00e1 je vlastn\u011b velikost podpovrchov\u00e9ho odtoku? Ale o tom nic po\u0159\u00e1dn\u00e9ho nev\u00edm, tak\u017ee konec \u00favah\u00e1m. Pro \u00faplnost je\u0161t\u011b dopln\u00edm, \u017ee\u00a0koryto Sloupsk\u00e9ho potoka ve Sloupu je i te\u010f st\u00e1le vyschl\u00e9…<\/p>\n

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LG Vl\u010d\u00ed sk\u00e1la p\u0159i pr\u016ftoku asi 1.5 dcl\/s (pr\u016ftok stanoven tzv. odborn\u00fdm odhadem).<\/figcaption><\/figure>\n

Konec pr\u00e1zdnin v povod\u00ed D\u0159evnice po LG Ka\u0161ava<\/strong><\/p>\n

Trochu s v\u011bt\u0161\u00ed chut\u00ed padala voda na lesnat\u00e9 povod\u00ed D\u0159evnice nad limnigrafickou stanic\u00ed v Ka\u0161av\u011b (plocha povod\u00ed 36.5\u00a0km2<\/sup>). O p\u0159edposledn\u00edm pr\u00e1zdninov\u00e9m v\u00edkendu zde spadlo celkem 29 mm, tj. objemov\u011b 1.067.970 m3<\/sup> vody. Profilem v Ka\u0161av\u011b odteklo 19.600\u00a0m3<\/sup>, to p\u0159edstavuje sou\u010dinitel odtoku 1.8 %. Je to hodn\u011b mal\u00fd sou\u010dinitel odtoku, vyschl\u00e9 povod\u00ed vodu do sebe dychtiv\u011b vs\u00e1lo…<\/p>\n

Druh\u00e1 sr\u00e1\u017ekov\u00e1 epizoda byla na D\u0159evnici a v okol\u00ed rozhoduj\u00edc\u00ed. V sobotn\u00edch ve\u010dern\u00edch a no\u010dn\u00edch hodin\u00e1ch (1.9.) celkov\u011b spadlo 63.8 mm, tedy objem vody 2.326.790 m3<\/sup>. Povod\u00ed u\u017e bylo p\u0159ece jen aspo\u0148 tro\u0161ku nasycen\u00e9 a sr\u00e1\u017eky v\u00fdrazn\u011bj\u0161\u00ed, tak\u017ee i \u0159eka D\u0159evnice se „rozpar\u00e1dila“ a ud\u011blala dv\u011b rychl\u00e9 „\u0161pi\u010dat\u00e9“ vlny. Prvn\u00ed po de\u0161\u0165ov\u00e9 d\u00e1vce 35 mm kulminovala 1.9. ve 20 h pr\u016ftokem 5.8\u00a0m3<\/sup>\/s a p\u0159ekro\u010dila 1. SPA. Hladina velice rychle klesala zase dol\u016f, ale slab\u00fd d\u00e9\u0161\u0165 zhruba po \u010dty\u0159ech hodin\u00e1ch op\u011bt z\u00edskal na s\u00edle a spadlo dal\u0161\u00edch 24 mm a D\u0159evnice chv\u00edli po p\u016flnoci vystoupala a\u017e na 2. SPA p\u0159i pr\u016ftoku 11.7\u00a0m3<\/sup>\/s. Pr\u016ftok „\u0161el“ v\u0161ak op\u011bt rychle dol\u016f, tak\u017ee celkov\u00fd objem odtekl\u00e9 vody profilem v Ka\u0161av\u011b n\u00e1sledkem t\u00e9to sr\u00e1\u017eky d\u011bl\u00e1 pouh\u00fdch 216.700\u00a0m3<\/sup>. Odtokov\u00fd koeficient 9.3 %.<\/p>\n

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LG Ka\u0161ava na D\u0159evnici. O kousek n\u00ed\u017ee tok D\u0159evnice vstupuje do slu\u0161ovick\u00e9 p\u0159ehrady.<\/figcaption><\/figure>\n

To\u017e… Z\u00e1v\u011brem mus\u00edm pod\u011bkovat v\u0161em, kte\u0159\u00ed mi s touto malou anal\u00fdzou pom\u00e1hali… \u00dadaje o sr\u00e1\u017ek\u00e1ch si v r\u00e1mci na\u0161\u00ed pobo\u010dky pro\u0161ly cestu od vedouc\u00edho RPP (region\u00e1ln\u00ed p\u0159edpov\u011bdn\u00ed pracovi\u0161t\u011b) Petra M\u00fcnstera, kter\u00fd m\u00fdm koleg\u016fm hydrolog\u016fm poskytl hodinov\u00e9 soubory tzv. slou\u010denky. Jedn\u00e1 se o \u00fadaje z radaru upraven\u00e9 dle nam\u011b\u0159en\u00fdch sr\u00e1\u017ekov\u00fdch \u00fahrn\u016f na klimatologick\u00fdch a sr\u00e1\u017ekom\u011brn\u00fdch stanic\u00edch \u010cHM\u00da. Tyto soubory v prost\u0159ed\u00ed GIS zpracovali p\u00e1nov\u00e9 Pavel Coufal a Bolek B\u00e1rta, ten to chud\u00e1k oded\u0159el nejv\u00edc… Pro zadan\u00e1 povod\u00ed (Punkva po Skaln\u00ed Ml\u00fdn a D\u0159evnice po Ka\u0161avu) stanovil z jednotliv\u00fdch pixel\u016f sr\u00e1\u017ekov\u00fd \u00fahrn pro ka\u017edou hodinu. Kouzeln\u00e1 technika… A za malou, ale p\u0159\u00ednosnou konzultaci d\u011bkuji tak\u00e9 La\u010fovi Bud\u00edkovi.<\/p>\n

Pozn.: Kr\u00e1sn\u00e1 ilustrace v n\u00e1hledu p\u0159\u00edsp\u011bvku poch\u00e1z\u00ed z d\u00edlny Lewise Trondheima – Zem\u011b t\u0159\u00ed \u00fasm\u011bv\u016f & Apokalyptick\u00e9 p\u0159\u00edb\u011bhy. Omlouv\u00e1m se tak\u00e9, \u017ee je tento p\u0159\u00edsp\u011bvek prost n\u00e1zorn\u00fdch graf\u016f , ale \u010das tla\u010d\u00ed (alibismus!) a text je pot\u0159eba publikovat dokud to je\u0161t\u011b n\u011bkoho aspo\u0148 trochu zaj\u00edm\u00e1… A tak\u00e9, na port\u00e1le \u010cHM\u00da je p\u0159\u00edsp\u011bvek od Petra \u0160ercla<\/a>, kter\u00fd se zab\u00fdv\u00e1 sr\u00e1\u017ekovou epizodou posledn\u00edho pr\u00e1zdninov\u00e9ho v\u00edkendu na \u010dty\u0159ech povod\u00edch P\u0159erovska a okol\u00ed Byst\u0159ice pod Host\u00fdnem (v\u010detn\u011b D\u0159evnice po Ka\u0161avu). Grafy dob\u0159e ilustruj\u00edc\u00ed tamn\u00ed vzestup pr\u016ftok\u016f zde nechyb\u00ed. A j\u00e1 jsem r\u00e1d, \u017ee v hodnocen\u00ed situace jsem se se sv\u00fdm pra\u017esk\u00fdm \u0161\u00e9fem v podstat\u011b shodl…<\/p>\n","protected":false},"excerpt":{"rendered":"

V\u0161eobecn\u011b nep\u0159\u00edjemn\u00e9 sucho, kter\u00e9 n\u00e1s letos tr\u00e1p\u00ed, bylo po dva posledn\u00ed pr\u00e1zdninov\u00e9 v\u00edkendy p\u0159eru\u0161eno dv\u011bma de\u0161\u0165ov\u00fdmi epizodami. O prvn\u00ed z nich jsem zde psal minule, a sice jak jsem si ten tou\u017eebn\u011b o\u010dek\u00e1van\u00fd d\u00e9\u0161\u0165 u\u017e\u00edval Na St\u0159el\u00e1ku u piva… Moje optimistick\u00e1 touha po spravedliv\u00e9 d\u00e1vce de\u0161t\u011b v\u0161ak nerealisticky nadhodnotila velikost skute\u010dn\u00e9ho p\u0159\u00edd\u011blu a tud\u00ed\u017e jsem […]<\/p>\n","protected":false},"author":4,"featured_media":840,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[4],"tags":[],"coauthors":[27],"class_list":["post-830","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-voda","entry","has-media"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/www.enviblog.cz\/blog\/wp-content\/uploads\/2018\/09\/trondheim.png","jetpack_shortlink":"https:\/\/wp.me\/pa1A1I-do","_links":{"self":[{"href":"https:\/\/www.enviblog.cz\/blog\/wp-json\/wp\/v2\/posts\/830","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.enviblog.cz\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.enviblog.cz\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.enviblog.cz\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.enviblog.cz\/blog\/wp-json\/wp\/v2\/comments?post=830"}],"version-history":[{"count":14,"href":"https:\/\/www.enviblog.cz\/blog\/wp-json\/wp\/v2\/posts\/830\/revisions"}],"predecessor-version":[{"id":851,"href":"https:\/\/www.enviblog.cz\/blog\/wp-json\/wp\/v2\/posts\/830\/revisions\/851"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.enviblog.cz\/blog\/wp-json\/wp\/v2\/media\/840"}],"wp:attachment":[{"href":"https:\/\/www.enviblog.cz\/blog\/wp-json\/wp\/v2\/media?parent=830"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.enviblog.cz\/blog\/wp-json\/wp\/v2\/categories?post=830"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.enviblog.cz\/blog\/wp-json\/wp\/v2\/tags?post=830"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.enviblog.cz\/blog\/wp-json\/wp\/v2\/coauthors?post=830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}