Drought planning. Monitoring real time stream flow

With dry conditions occurring as planting season is underway monitoring real time stream flow is a useful tool.

Non-irrigation users as well as those who rely on irrigation can use this tool to forecast short term and long term conditions that will benefit or impact when and what to plant, when to water, and how precipitation or the lack thereof will help or hurt applications of nitrogen fertilizer and herbicides that require surface moisture for activation.

Here is the link to the USGS real time stream flow readings on the National Water Dashboard for Salem County and surrounding areas. Chose stream level data and aquifer type in the legend box to see streams near your location.

At the end of March, the county was about at an inch and a half deficit for rainfall compared to the 30-year average. Despite the inches received in April, streamflow readings at nine locations in the coastal plain aquifer system of South-Central NJ are much below normal. Ten readings are below normal, and one reading on Mantua Creek in Pitman, NJ is at an all-time low for this day.

If we use the US Drought Monitor comparison slider, we can see that much of Cumberland County and parts of Salem and Gloucester are experiencing drier conditions then this time last year. Gusty winds and below average high temperatures the last three days of April stressed spring seedling flower transplants and annual crop germinations. The duration of wind significantly dried surface soil moisture limiting transplant root expansion and delayed new seeding Adventitious roots from expanding deeper into the soil. Comparing this information to last year’s crop progress and monitoring root development (moisture seeking behavior) can help producer’s estimate crop progress and response to droughty conditions going forward.

The current forecast has a good chance of rain on Wednesday and again on Friday and Saturday. After the rains, revisit the real time stream monitoring site and see if local conditions have changed. If stream discharge improves, this is a good indication sub soil has adequate moisture, and in sandy soils this will help roots to expand deeper into the soil profile.