Water name

Ahr

Time

July 12, 2023, 9:12 a.m.

Name

Jenny und Anna

Note

- Halber Meter vom Ufer entfernt
- ca. 3cm Tiefe, leichte Strömung (windig)
- ca. 15 Meter von Brücke entfernt
- Geruch: leicht vermodert (aber kaum merkbar)
- Boden: steinig, Algen
- ein wenig Müll: Zigaretten, Pappe, Kabel
- am Rand: Steine und Gräser
- Enten
- letzte Nacht: Regen, Tage davor: >30 Grad
- circa 8 Meter flussaufwärts: Kanal

Explore environment

Chemical Parameters

Parameter Value Note
pH-Wert 7.46  leicht grünlich
Nitrat 0.11 mg/L leicht rosa
Sulfat 15.0 mg/L N/A
Ammonium 0.13 mg/L leicht grünlich/bläulich

Saprobic Abundances

Saprobic Organism Abundance Note
Schnecken 5 Flussnapfschnecke
Mückenlarven 3 Bremsenlarve

Structural Assessment

Parameter Assessment
Water Utilization village, industrial area
Water Margin approx. 5-20 m
Water Course partly curved (partly modified)
Bank Vegetation sparse grove, herbaceous vegetation of stinging nettles and other nutrient indicators
Bank Structure banks partly strengthened (< 50%), bank failures possible
Water Cross Section very shallow (width:depth > 10:1)
Water Flow alternation of slow and fast flowing water at longer intervals
Water Depth Variance no depth variance
Riverbed mosaic-like distribution of sand/gravel/stones and deadwood, pronounced formation of islands
Water Continuity piping < 2 m, artificial step of single stones, can be overcome by fish and invertebrates

Water Quality Indices

Saprobic Index
Class II-III
kritisch belastet
Value
2.44
Validity
56%
BACH Index
N/A
Value
N/A
Validity
35%
Parameters
Physical-Structural Index
Class III
verändert
Value
2.70
Validity
100%