Feature category: 4. Waters
Feature type:
(with ordinal number)		 4.07 DAM, WEIR (PŘEHRADNÍ HRÁZ, JEZ)
Feature type code: bi020
Feature definition:

Dam - a building structure made of natural or artificial materials, which is the main part of the dam damming the watercourse and its valley and creating a reservoir.
Weir - a building structure damming the riverbed (exceptionally also the valley), which serves to create a reservoir in order to achieve the required water depth and adapt a slope.
Geometric determination of the feature: line - axis of a dam or weir
Positional accuracy: mp = 1,5 m
Geometric data source:
aerial survey photos, orthophoto, LLS, field recognition, VÚV TGM
Descriptive data source:
VÚV TGM, Geonames
A t t r i b u t e s :
Attribute name Data type Attribute subject Attribute values Code list
NAZEVTOKU VARCHAR2(60) name of the watercourse
TYPVOD_K
TYPVOD_P 		VARCHAR2(3)
VARCHAR2(50) 		feature subtype C_PODTYPOBJEKTUVODSTVA
JMENO VARCHAR2(100) name transferred from Geonames
FID_ZBG VARCHAR2(40) unique feature identifier in ZABAGED®
S i z e   r e s t r i c t i o n s :
without restriction
E x a m p l e s :
Příklad
Feature illustration - waterdam (code P); photo: ZÚ archives
Příklad
Feature illustration - dam of polder (code P); photo: ZÚ archives
Příklad
Feature illustration - weir (code J); photo: ZÚ archives
Příklad
Feature illustration - weir (code J); photo: ZÚ archives
F e a t u r e   h i s t o r y :
2016-04-01: JMENO - attribute data type changed (VARCHAR2(80) -> VARCHAR2(100))
Extended web version updated to: 24.06.2025
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