MORPHOMETRIC DATA

Flushing Rate (yr¹)

81,000

1999 MESOTROPHIC

4.6

1.1

1,350

46.1Max. Depth (m):

Mean Depth (m):

Volume (m³):

Watershed Area (Ac.):

Shore Length (m):

ROUND POND, LYMAN, NH

TROPHIC CLASSIFICATION KNOWN EXOTIC SPECIES

Year Trophic class

Surface Area (Ac.): 19

Elevation (ft): 830

P Retention Coef: 0.36

The Waterbody Report Card tables are generated from the DRAFT 2016 305(b) report on the status of N.H. waters, and are based on data collected from 2006-

2015. Detailed waterbody assessment and report card information can be found at www.des.nh.gov/organization/divisions/water/wmb/swqa/index.htm

Volunteer Lake Assessment Program Individual Lake Reports

2,024

Designated Use Parameter Category Comments

Phosphorus (Total) Slightly BadAquatic Life Data exceed water quality standards or thresholds for a given parameter by a small margin.

pH Very Good All sampling data meet water quality standards or thresholds for this parameter.

Oxygen, Dissolved Encouraging Limited data for this parameter predicts water quality standards or thresholds are being met; however more data are

necessary to fully assess the parameter.

Dissolved oxygen satura Slightly Bad Data periodically exceed water quality standards or thresholds for a given parameter by a small margin.

Chlorophyll-a Slightly Bad Data exceed water quality standards or thresholds for a given parameter by a small margin.

Escherichia coli No DataPrimary Contact Recreation No data for this parameter.

Chlorophyll-a Slightly Bad Data periodically exceed water quality standards or thresholds for a given parameter by a small margin.

WATERSHED LAND USE SUMMARY

Fry, J., Xian, G., Jin, S., Dewitz, J., Homer, C., Yang, L., Barnes, C., Herold, N., and Wickham, J., 2011. Completion of the 2006 National Land Cover Database

for the Conterminous United States, PERS, Vol. 77(9):858-864. For larger image contact NHDES.

Land Cover Category % Cover Land Cover Category % Cover Land Cover Category % Cover

Open Water 5.39

Developed-Open Space 2.99

Developed-Low Intensity 0

Developed-Medium Intensity 0

Developed-High Intensity 0

Barren Land 0

Deciduous Forest 33.79

Evergreen Forest 17.92

Mixed Forest 32.47

Shrub-Scrub 1.21

Grassland/Herbaceous 0.02

Pasture Hay 3.75

Cultivated Crops 0

Woody Wetlands 1.62

Emergent Wetlands 0.4

This epo t as ge e ated the NH DES Volu tee Lake Assess e t P og a VLAP . Fo o e i fo aio o ta t VLAP at - o sa a.stei e @des. h.go

Observations Refer to Ta le 1 and Histori al Deep Spot Data Graphi s) Chlorophyll-a: Chlo oph ll le els e e slightl ele ated i Ju e, e ai ed sta le i Jul a d the de eased to ode ate le els i August. A e age hlo oph ll le el de eased f o ut e ai ed slightl g eate tha the state edia a d the th eshold fo esot ophi lakes. Histo i al t e d a al sis i di ates highl a ia le hlo oph ll le els si e o ito i g ega . Conductivity/Chloride: Epili ei uppe ate la e , H poli ei lo e ate la e , G a el Pit, I let, a d Outlet o du i it le els e e slightl g eate tha the state edia ho e e ot a o e a le el of o e . Epili ei hlo ide

le els e e e lo a d less tha the state edia i di ai g o i lue es f o oad sali g. Histo i al t e d a al sis i di ates sta le epili et o du i it le els si e o ito i g ega . Color: Appa e t olo as easu ed i the epili io a d i di ates the po d ate is ode atel tea olo ed o o . Total Phosphorus: Epili ei , I let a d Outlet phospho us le els e e slightl ele ated i Ju e a d Jul follo i g pe iods of hea ai fall a d ele ated algal g o th, a d the de eased to ithi a lo to ode ate a ge i August. A e age epili ei phospho us de eased slightl f o ut e ai ed g eate tha the state edia a d the th eshold fo

esot ophi lakes. Histo i al t e d a al sis i di ates elai el sta le phospho us le els ith ode ate a ia ilit et ee ea s. H poli ei phospho us le els e e slightl ele ated a d e ai ed sta le f o Ju e th ough August. Transparency: T a spa e easu ed ith VS a d ithout NVS the ie s ope as ithi a good a d a e age a ge i

Ju e, de eased i Jul , a d the i eased i p o ed g eatl i August he algal g o th de eased. A e age NVS t a spa e e ai ed sta le ith a d histo i al t e d a al sis i di ates sta le t a spa e le els si e o ito i g

ega . Turbidity: Epili ei a d H poli ei tu idit le els lu tuated ithi a ode ate a ge a d e ai ed fai l sta le f o Ju e th ough August. G a el Pit tu idit le els e e ele ated i Ju e follo i g a sig ii a t sto e e t a d the de eased to ithi a lo a ge. I let tu idit le els e e slightl highe i Ju e ut e ai ed ithi a o al a ge fo this staio . Outlet tu idit le els e e ithi a lo a ge a d de eased as the su e p og essed. pH: Epili ei , H poli ei , G a el Pit, I let, a d Outlet pH le els e e ithi the desi a le a ge . - . u its. Histo i al t e d a al sis i di ates sta le epili ei pH le els si e o ito i g ega .

Volunteer Lake Assessment Program Individual Lake Reports

Round Pond, Lyman

7 Data Summary

NH Media Values: Media alues fo spe ii pa a ete s ge e ated f o histo i lake o ito i g data. Alkali it : . g/L

Chloroph ll-a: . g/

Co du ivit : . uS/

Chloride: g/L

Total Phosphorus: ug/L

Tra spare : .

pH: .

NH Water Qualit Sta dards: Nu e i ite ia fo spe ii pa a ete s. Results e eedi g ite ia a e o side ed a

ate ualit iolaio . Chloride: > g/L h o i

E. oli: > ts/ L – pu li ea h

E. oli: > ts/ L – su fa e ate s

Tur idit : > NTU a o e atu al le el pH: et ee . - . u less atu all o u i g

Para eter Tre d E pla aio E pla aio Tre d Para eter

Chlo oph ll-a Sta le T e d ot sig ii a t; data highl a ia le. T e d ot sig ii a t; data sho lo a ia ilit . Sta le Co du i it

T a spa e Sta le T e d ot sig ii a t; data sho lo a ia ilit . T e d ot sig ii a t; data sho lo a ia ilit . Sta le pH epili io

Phospho us epili io Sta le T e d ot sig ii a t; data ode atel a ia le.

Historical Water Quality Trend Analysis

Recommended Actions: Po d phospho us a d hlo oph ll le els ha e e ai ed ithi a ele ated a ge si e . A o i aio of fa to s a e o t i ui g to these o diio s a d ould i lude d oughts, ea lie i e-out, a e ate te pe atu es, o e i te se sto e e ts a d asso iated lushi g of s ste s i h i ut ie ts a d dissol ed

o ga i ate to the po d, a d ete io of ut ie ts due to la k of lushi g of the po d do st ea . Co i ued o ito i g ill e eal if phospho us le els de ease o e ai ithi the highe a ge. Keep up the g eat o k!

Staio Na e Ta le . A e age Wate Qualit Data fo ROUND POND-LYMAN

Alk. Chlo -a Chlo ide Co d. Total P T a s. Tu . pH Colo

g/l ug/l g/l uS/ ug/l tu PCU

NVS VS

Epili io . . . . . . .

H poli io . . .

G a el Pit . . .

I let . . .

Outlet . . .