Statistics Altdorf / Pfettrach

Site number:	16924707
District:	Landshut
Operator:	Wasserwirtschaftsamt Landshut

Body of water:	Pfettrach
Catchment:	110.16 km²
River chainage:	1.41 km
Gauge zero point:	391.78 m NHN (DHHN2016)

No hydrological yearbook available at this site.

Statistics (1977 - 2021)
	Winter	Summer	Year
NQ	0.132	0.106	0.106	m³/s
MNQ	0.356	0.312	0.296	m³/s
MQ	0.725	0.579	0.651	m³/s
MHQ	14.6	8.35	17.3	m³/s
HQ	48.6	48.6	48.6	m³/s

Flood frequency (HQ_T)
HQ₁	11.4 m³/s
HQ₂	19.3 m³/s
HQ₅	29.4 m³/s
HQ₁₀	38.1 m³/s
HQ₂₀	47.5 m³/s
HQ₅₀	62.2 m³/s
HQ₁₀₀	74.8 m³/s

Extreme values flood (1977 - 2021)*
* mit historischen Werten, falls vorhanden
1.	48.6 m³/s	02.08.1991
2.	48.6 m³/s	15.02.1990
3.	42.2 m³/s	13.04.1994
4.	39.8 m³/s	02.03.1987
5.	39.2 m³/s	20.02.1999

Extreme values low water
1.	0.106 m³/s	2017
2.	0.132 m³/s	2013
3.	0.148 m³/s	1985
4.	0.154 m³/s	2020
5.	0.158 m³/s	1987

Explanations

Statistics

HQ highest value of total period

MHQ arithmetic mean of the highest values of a period (year, summer or winter)

MQ arithmetic mean

MNQ arithmetic mean of the lowest values of a period (year, summer or winter)

NQ lowest value of total period