Gs Dd No D-15 (Johnson) dam
Gs Dd No D-15 (Johnson)
Located in Valley Falls, Kansas, Gs Dd No D-15 (Johnson) is a local government-owned earth dam designed by SPEAKER & KING for flood risk reduction along the South Cedar Creek-TR. Completed in 1982, this dam stands at a height of 37 feet and spans 741 feet in length, with a storage capacity of 474 acre-feet. With a significant hazard potential and a moderate risk assessment rating, the dam is regulated by the Kansas Department of Agriculture and undergoes regular inspections to ensure its safety and functionality.
Despite its uncontrolled spillway type, Gs Dd No D-15 has a spillway width of 156 feet to manage excess water flow. The dam has a normal storage capacity of 110 acre-feet and covers a surface area of 15 acres, serving as a crucial infrastructure for flood control in Jackson County, Kansas. Its location in a populated area underscores the importance of maintaining and monitoring this structure to protect downstream communities and the surrounding environment from potential flood events.
With a history of successful flood risk reduction and a state-regulated status, Gs Dd No D-15 plays a key role in water resource management in the region. As climate change continues to impact weather patterns and increase the frequency of extreme precipitation events, the importance of well-maintained dams like Gs Dd No D-15 for flood control and water resource management cannot be overstated. The collaborative efforts of local and state agencies in regulating, inspecting, and enforcing safety standards for this dam highlight the ongoing commitment to safeguarding communities and natural habitats in the face of changing climate conditions.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Gs Dd No D-15 (Johnson) -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Soldier C Nr Delia | 42 cfs | → |
| Soldier C Nr Topeka | 85 cfs | → |
| Delaware R Nr Muscotah | 321 cfs | → |
| Kansas R At Topeka | 5,620 cfs | → |
| Delaware R Bl Perry Dam | 33 cfs | → |
| Kansas R At Lecompton | 7,110 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Gs Dd No D-15 (Johnson).
Boat launches
Campgrounds
Track Gs Dd No D-15 (Johnson) in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Gs Dd No D-15 (Johnson)
Where does the data for Gs Dd No D-15 (Johnson) come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Significant hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Gs Dd No D-15 (Johnson).