Site visit details

Overview

Catchment Goulburn River
Site Pearsons Creek on Longwood/Gobur Road u/s Creightons Creek GB_PEA010
Date and Time Saturday 18th April 2015 09:30am
Approved Approved

Notes

Physical Chemical Tests

D.O. % D.O mg/L E coli orgs/100mL EC µS/cm Nitrate-Nit mg/L N pH pH Units Rain mm Air ° C Water ° C Coli orgs/100mL P mg/L Turb FTU Turb NTU
Sample 190 80
Weather
Last rainfall
Flow estimate
Water Appearance
Stream depth
Stream width
Hazards
Litter/Pollutants
Details of rain event: 15/4/15 brief storms (7mm) 17/4/15 11am til 11.30am collected samples from CRE003, PEA010, CRE011, CRE010. Light rain during the afternoon, steady rain after dark until ~ 4pam on 18/4/15 (~37mm) 18/4/15 9.30am to 10am collected samples. 19/4/15 regular Waterwatch samples collected ~8.00am to 10.30am ~2mm rain in March. 7 weeks from24/2 to 15/4/15 without significant rain. Thus Turbidity of samples on 17/4/15 very low, runoff from rain event increases turbidity but in different proportions, ~10 at 2 sites, ~4 at 2 sites. This is partly due to the relationship between time of collection and presence of sediment. Runoff has not diluted the salt as the EC has increased at all 4 sites, so it appears that the runoff has added ions(conducting particles) to the creek, most likely salt. The regular EC measurements indicate a steady level of salt which is moving with the flow, so an equal input from the soil and rock is necessary to maintain the steady level, the runoff ads more from the surface.

Diary photos

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